Everyday Science — Chapter 9
Energy & Environment — Renewable Sources, Solar Energy, Pollution and Climate Basics
Why this chapter matters: this is the last Everyday Science chapter, and it closes the subject by joining its two threads — the physics of energy (Chapter 6) and the chemistry of the atmosphere (Chapters 2 and 7) — to the questions the papers actually ask about the world students live in: where energy comes from, what solar cells are made of, what makes rain acidic, and which treaty protects the ozone layer. Our verified banks hold 73 questions matching this topic by question text: climate and treaties (28) — above all the greenhouse effect, the gas mainly causing global warming, the ozone layer and the Kyoto Protocol — renewable and other energy sources (21) — above all hydel power in Pakistan, renewable vs non-renewable, and the cheapest source of energy — pollution (18) — above all the most polluted country, city, lake and river the papers ask about — and solar energy (6) — above all silicon, the element required for solar-energy conversion. There is no lecture unit behind this topic (taxonomy sources: banks, with ★ additions verified against standard references), so the chapter is built on the banks’ own keys, the IBES Everyday Science capsule bank, and standard-reference checks for the treaty dates and the acid-rain chemistry. Learn the tables, then drill the traps in Section 12 — several of this chapter’s questions are keyed differently in different papers, and knowing which split exists is itself the mark.
Exam Trend box
- 🔁 Most repeated: the CO₂ main-warming-gas question (four papers, identical wording, identical key) and the ozone pair — ozone blocks ultraviolet rays (five papers) and sits in the stratosphere. No ⭐ mark is claimed for these repeaters in this chapter: the counted 73-question set carries no filename-year breakdown for them, so a 2024–26 currency claim would be a guess.
- 🆕 Newly appeared: biogas composition, methane + CO₂ (Section 15.5, three PPSC PMS papers in 2026 after a single 2021 paper) and the 2025 climate year (Section 8A’s retrospective table below, origin year 2025; 10 CA-bank backing rows, script
hidden_files/goldmine-notes-count-eds09-2025climate.py over 17 CA files / 2,012 questions) — no 🔁/⭐ claimed for the Section 8A table itself, one year only. Also new in the retrospective sense: the 2025 energy year (Section 8B’s retrospective table below, origin year 2025; 10 CA-bank rows / 9 events across 6 month files, script hidden_files/goldmine-notes-count-eds09-2025energy.py over 17 CA files / 2,012 questions) — no 🔁/⭐ claimed for the Section 8B table itself, one year only.
1. Energy: the two families the papers ask about
- Renewable energy = energy from sources that are continuously produced in nature and are essentially inexhaustible (the bank’s own definition): sunlight, wind, flowing water, the Earth’s heat, plant matter, tides. Using them does not use them up.
- Non-renewable energy = energy from sources that exist in a fixed stock and run down as they are used: fossil fuels (coal, oil, natural gas) and nuclear fuel (uranium). Once burned or fissioned, they are gone.
- The papers’ favourite test of the distinction is a list question: “Which of the following is a renewable source of energy?” with options Wind, Solar, Tidal — answer: All of these. And the mirror question: “Which of the following is a non-renewable source of energy?” with options Wind, Solar, Fossil Fuels, Hydropower — answer: Fossil Fuels.
- Fossil fuels are the remains of ancient plants and animals, buried, heated and compressed over millions of years into coal (solid), oil/petroleum (liquid) and natural gas (gas). The capsule’s test: “Which of the following is NOT considered a fossil fuel?” with options Coal, Natural gas, Oil, Solar energy — answer: Solar energy.
- Energy forms behind all of this were taught in Chapter 6: wind energy is kinetic energy (moving air), water held behind a dam is potential energy, and a solar cell converts light energy into electrical energy (see Section 3).
2. Master table — the renewable sources
| Source | How it works | Papers’ key facts |
|---|
| Solar | Sunlight captured by panels or concentrated as heat | Cells made of silicon; conversion element silicon (Section 3) |
| Wind | Moving air turns turbine blades | Kinetic energy; a renewable source; environment-friendly with hydel (Section 12) |
| Hydel / hydroelectric | Flowing or falling water turns turbines | Pakistan’s largest station Tarbela; oldest Malakand Dargai; cheapest-source key in one paper (Section 12) |
| Geothermal | Heat from inside the Earth (hot rocks, steam, hot springs) | Used where the crust is thin or volcanic; a renewable source |
| Biomass / biogas | Plant matter, vegetation and the wastes of living organisms burned or digested | Capsule definition: plants, vegetation and animal wastes collectively = biomass; biogas is mainly methane |
| Tidal | The rise and fall of sea tides drives turbines | A renewable source; listed with wind and solar in the banks’ “all of these” question |
The non-renewable side, for contrast
| Source | Key fact the papers use |
|---|
| Coal | The largest source of energy in the older bank paper’s framing; a fossil fuel; burning it releases sulphur dioxide (acid rain, Section 6) |
| Oil / petroleum | A fossil fuel; transport’s main fuel; burning releases carbon dioxide and nitrogen oxides |
| Natural gas | The cleanest-burning fossil fuel of the three, but still a fossil fuel and still a carbon dioxide source |
| Nuclear (atomic) energy | From uranium fission; the banks’ answer to “the main source of energy for man in the distant future” is atomic energy (an older paper’s framing — see Section 12) |
Pakistan’s energy picture, as the banks ask it
- Energy crisis in Pakistan — the bank question asks the main reasons, with options Circular debt, Imported fuel, Power theft — answer: All of these. Learn the three together; the paper never asks for one alone.
- Hydel shares (taught in Chapter 6, repeated here because the banks ask them in this topic’s set): Tarbela is the largest hydel power station in Pakistan; Malakand Dargai is the oldest hydroelectric project; Mangla and Warsak are the other named stations. (One older paper keys Warsak as “largest” — but Tarbela is absent from that paper’s options, so Tarbela remains the standard answer; see Section 12.)
- Cheapest source of energy — the banks split on this one (Section 12): one paper keys Hydel, another keys Solar. Both framings are taught in Section 12 so the split cannot catch you out.
3. Solar energy in detail (the most-asked renewable)
- Solar energy is energy from sunlight. It reaches the Earth as light and heat, and it is renewable (the Sun is not used up by our use of it) and environment-friendly — the bank question “Which natural source of energy is friendly to the environment?” keys Solar and hydel.
- Solar cells (photovoltaic cells) convert solar energy directly into electricity. The conversion is light energy → electrical energy — the capsule asks this conversion directly.
- The element required for solar-energy conversion is silicon. The bank asks this three times with the same key: Silicon (against Germanium, Uranium, Selenium; and against Iron, Aluminium, Lead). The capsule asks the same fact as “the element used to fabricate solar cells and transistors” — answer again: Silicon.
- Solar cells are mainly made of silicon — asked directly in a 2026 PPSC paper (options Copper, Aluminium, Silicon, Iron). Silicon is a semiconductor: it conducts electricity better than an insulator but worse than a metal, which is exactly what a photovoltaic cell needs — light knocks electrons loose in the silicon, and the cell collects them as current.
- Solar energy’s limits (why it has not replaced everything): it is available only in daylight, it varies with weather and season, and it needs storage (batteries) or a grid connection for night use. The papers do not ask the limits directly, but they are the reason the “distant future” question still keys atomic energy in the older paper (Section 12).
4. Pollution: types, pollutants and the papers’ superlatives
The four types
| Type | Main pollutants | Effects the papers ask |
|---|
| Air pollution | Smoke, dust, sulphur dioxide (SO₂), nitrogen oxides (NOₓ), carbon monoxide (CO), CFCs | Smog; acid rain; respiratory disease; the traffic policeman “bears the brunt” of pollution hazards (bank phrasing) |
| Water pollution | Sewage, industrial waste, oil, fertilisers | Polluted rivers and lakes; the Ravi is the banks’ most polluted river of Pakistan (below) |
| Land / soil pollution | Solid waste, chemicals, pesticides | The capsule keys acid rain as a cause of soil pollution |
| Noise pollution | Traffic, industry, loud machinery | Hearing damage and stress — the bank asks “Noise pollution causes?” as a health-effects question |
Primary vs secondary pollution (a bank key)
- The bank question gives Smog, NO₂, SO₂ and dust and asks what they are the source of — answer: Primary pollution. Primary pollutants are emitted directly into the air; secondary pollutants (like ozone at ground level and much of acid rain’s chemistry) form later by reactions in the atmosphere. If the question lists emitted substances, the answer is primary.
Carbon monoxide — the blood fact
- Carbon monoxide has a stronger affinity for haemoglobin than oxygen does — the bank asks which substance in blood CO binds to: it binds to haemoglobin (forming carboxyhaemoglobin), which is why even small amounts of CO are dangerous. This is the pollution question that sits closest to Chapter 3’s blood section.
The papers’ pollution superlatives (bank keys — read the trap note in Section 12)
| Superlative | Bank key |
|---|
| Most polluted country in the world | Peru (with Pakistan second in the same paper’s pair) |
| Most polluted city in the world | Mexico (Mexico City; Karachi, Tokyo and London are the distractors) |
| Most polluted lake in the world | Lake Erie (North America) |
| Most polluted river of Pakistan | Ravi |
These are dated bank keys from older papers, not current rankings — Section 12 explains why they are taught as keys anyway: in the exam hall, the paper’s key is the mark, and these four are asked repeatedly with the same options.
5. Smog: smoke + fog, and the two kinds
- Smog = smoke + fog. It forms when smoke and other pollutants mix with fog, cutting visibility and irritating eyes, skin, lungs and heart. The bank’s industrial-city question describes cities “where air is highly polluted due to smoke and where smoke-fog (smog) exists most of the time at night or in the mornings” and asks about deaths from it — the keyed diseases are lung and heart diseases (both).
- Classical (London-type) smog: smoke + fog + sulphur dioxide, in cool, humid conditions — the smog of coal-burning industrial cities.
- Photochemical smog: sunlight acts on nitrogen oxides and hydrocarbons from vehicle exhaust to form ground-level ozone and other irritants — the smog of sunny, traffic-heavy cities. (Do not confuse ground-level ozone here with the stratospheric ozone layer in Section 7: same molecule, opposite job — up high it protects, down low it irritates.)
6. Acid rain: the chemistry the papers repeat
- Normal rainwater is slightly acidic, pH about 5.6, because dissolved carbon dioxide forms weak carbonic acid. Rain is called acid rain when its pH falls below 5.6.
- Cause: burning fossil fuels releases sulphur dioxide (SO₂) and nitrogen oxides (NOₓ). In the atmosphere these react with water and oxygen to form sulphuric acid (H₂SO₄) and nitric acid (HNO₃), which fall as acid rain.
- The capsule asks “Acid rain contains high levels of…” twice, and both times the key is Both: sulphuric acid and nitric acid. If only one appears as an option, sulphuric acid is the first pick — but the capsule’s keyed answer is the pair.
- Effects: damages forests and crops, acidifies lakes and streams (killing fish and aquatic life), leaches nutrients from soil, and corrodes buildings and monuments — including marble, which acid dissolves.
- Acid rain is also a cause of soil pollution (capsule key) — the same fact appears in both the pollution and the acid-rain framings.
7. Climate basics: greenhouse effect, global warming, ozone
The greenhouse effect — the mechanism
- Greenhouse gases (CO₂, methane, water vapour, nitrous oxide, ozone) in the atmosphere absorb heat radiated from the Earth’s surface and re-radiate it, warming the planet — like the glass of a greenhouse. Without any greenhouse effect the Earth would be far too cold for life; the problem is the enhanced effect from added gases.
- The gas mainly causing global warming is carbon dioxide (CO₂) — asked identically in four bank papers, always with the same key against Nitrogen, Methane and Hydrogen. (Methane is more potent per molecule, but CO₂ is the main driver because of the sheer quantity emitted — the papers key CO₂, so CO₂ is the answer.)
- The main gases of the greenhouse effect as a set: carbon dioxide, methane, water vapour, nitrous oxide. If the question asks for the main gas (singular), answer CO₂; if it asks for the gases (plural), give the set.
- Global warming = the long-term rise in the Earth’s average temperature caused by the enhanced greenhouse effect. Its expected effects, in the capsule’s phrasing, include increasing drought and altered frequency and distribution of wildfires.
The ozone layer — protection from above
- The ozone layer lies in the stratosphere, about 30 miles (50 km) above the Earth (the bank’s figure; Chapter 2 taught the layer at 20–30 km for the ozone maximum — the papers’ “about 50 km” phrasing resolves to the same layer, the stratosphere).
- The ozone layer protects the Earth from the Sun’s ultraviolet (UV) rays — asked in five bank papers with keys Ultraviolet / UV rays (against infra-red, X-rays, gamma rays and visible light). UV is the radiation it blocks; it does not block visible light or infra-red heat.
- What damages the ozone layer: CFCs (chlorofluorocarbons) — the bank asks “Which gas affects the ozone layer?” with options N₂, O₂, CFCs, CO₂ — answer: CFCs. CFCs were used in refrigerators, air conditioners and aerosol sprays; one chlorine atom from a CFC can destroy many ozone molecules.
- Montreal Protocol (1987) — the treaty that phases out ozone-depleting substances: agreed 16 September 1987, in force 1 January 1989. The bank question describes “an international treaty signed in 1987 related to protecting the ozone layer by phasing out the production and consumption of ozone-depleting substances” — answer: Montreal Protocol (against Kyoto Protocol, Paris Agreement, Vienna Convention). It is the most successful environmental treaty ever made: CFC production has collapsed, and the ozone layer is recovering.
8. Master table — the climate treaties in order
| Treaty / event | Year | What it does | Papers’ key |
|---|
| Montreal Protocol | Agreed 1987, in force 1989 | Phases out ozone-depleting substances (CFCs) | The 1987 ozone treaty (Section 7) |
| Rio Earth Summit / UNFCCC | 1992 (Rio de Janeiro) | Framework Convention on Climate Change adopted; the umbrella under which later treaties sit | UNFCCC adopted at Rio 1992; in force 1994 |
| Kyoto Protocol | Adopted 11 December 1997, in force 16 February 2005 | First treaty with legally binding emission-reduction targets for developed countries (average 5.2% below 1990 levels, 2008–2012) | The banks key it as “talks about Pollution”; one paper’s enforcement date is a wrong key (Section 12) |
| Paris Agreement | Adopted 12 December 2015, in force 4 November 2016 | All nations pledge to hold warming well below 2 °C above pre-industrial levels, pursuing 1.5 °C | The post-Kyoto agreement; the banks ask it by its article number in one 2026 paper |
- US participation (PMS Screening 2026 Tough GK Mock, Q15; mock-only bank row, no mark claimed): the country that withdrew from the Paris Agreement and later rejoined is the United States — first withdrawal effective 4 November 2020, rejoined 19 February 2021; a second withdrawal was ordered 20 January 2025 (UN depositary notification effective 27 January 2026). The 2020→2021 out-and-back is the classic one-liner; the 2025 order is the update.
How the papers ask the treaties
- “Which of the following countries has signed and ratified the Kyoto Protocol?” with options Germany, France, Japan — answer: All of the above.
- “Kyoto Protocol talks about:” with options Employment, Pollution, Agriculture, None — answer: Pollution (the banks’ shorthand for emission control).
- “An international treaty signed in 1987 related to protecting the ozone layer…” — answer: Montreal Protocol.
- UNFCCC = United Nations Framework Convention on Climate Change, adopted at the Rio Earth Summit 1992 — the bank asks when it came into force (1994) as a follow-up to the Rio question.
8A. The 2025 climate year — the retrospective table (origin year 2025) 🆕 2025
This table is a retrospective fold-in from the Current Affairs retrospective (coverage-audit item, 2026-11-01): 2025’s climate developments that are still true and still askable, marked with their origin year, never presented as current news. Bank evidence: the gk360 monthly Current Affairs bank (17 files / 2,012 questions; script hidden_files/goldmine-notes-count-eds09-2025climate.py — 10 tight rows cited below, 5 rows excluded and stated, not counted). Every row is verified against a standard source named in the chapter footer; where the bank’s wording is loose, the verified wording is taught and the bank wording is corrected in Section 12, not taught. COP30’s host (Belém, Brazil) is not repeated here — it already lives in GK-11 Section 9A, which this section cross-links. No 🔁/⭐ mark is claimed for this table itself: one year’s CA-bank rows are not a multi-paper repeat pattern.
| Month 2025 | Development | The exam fact |
|---|
| 6 February | First African Urban Heat Summit, Freetown, Sierra Leone | Sierra Leone hosted the first-ever African Urban Heat Summit (Freetown City Council + Climate Resilience for All); Vice President Mohamed Juldeh Jalloh launched Freetown’s Heat Action Plan — Africa’s first — at the summit, under Mayor Yvonne Aki-Sawyerr. |
| February | Pakistan’s climate bill: ~US$348 billion | The World Bank’s Country Climate and Development Report puts Pakistan’s total investment need for a comprehensive climate-and-development response at ~US$348 billion for 2023–2030 — US$152 billion for adaptation and resilience + US$196 billion for deep decarbonisation (10.7% of cumulative GDP for the period; the Bank itself calls it a lower-bound estimate). The CA bank asks it as “by 2030” — the window is 2023–2030, not a single-year figure. |
| 24–25 February | Prakriti 2025, New Delhi — India’s first International Conference on Carbon Markets | Organised by the Bureau of Energy Efficiency (Ministry of Power), inaugurated by Power Minister Manohar Lal; the Indian Carbon Market is phased, with a 40% emission reduction by 2027 and full implementation by 2030 as reported at the conference. “First” here means India’s first such conference, not the world’s. |
| 4 March | United States withdraws from the Loss & Damage Fund’s board | By letter dated 4 March 2025 (Reuters, 7 March), the US Treasury withdrew both the US board member and alternate, with no US replacement. The Fund for Responding to Loss and Damage was created at COP27 (Sharm El-Sheikh, 2022), operationalised at COP28, with the World Bank as interim trustee; the US had pledged US$17.5 million under President Biden. Precision: the letter withdraws the US from the board — it does not state a withdrawal from the Fund altogether. |
| 16 June – 18 July | First Falepili Union ballot: Tuvalu → Australia | Under the Australia–Tuvalu Falepili Union (signed November 2023, in force 28 August 2024), the first ballot for the climate-mobility pathway opened 16 June 2025: up to 280 Tuvaluans a year gain permanent residence in Australia. 8,750 registrations were received — 82% of Tuvalu’s 10,643 people (2022 census). The bank’s “set to receive” answer is Australia; the 2025 fact is the ballot opening, not completed arrivals. |
| 26 August | Pakistan launches the New Energy Vehicle (NEV) Policy 2025–30 | Prime Minister Shehbaz Sharif formally launched the NEV Policy 2025–30 in Islamabad (Dawn, 27 August): clean transport, climate resilience, lower emissions, foreign-exchange savings on fuel imports — with e-scooters distributed to top-performing students at the launch. |
| 3–7 November | MOP37 — Montreal Protocol, Nairobi, Kenya | The 37th Meeting of the Parties to the Montreal Protocol met at UNEP headquarters, Nairobi (619 participants, 20 decisions adopted; HFC-23 emissions on the agenda), in the 40th anniversary year of the Vienna Convention (1985) — the ozone treaty’s machinery still meeting, still deciding. |
| November | Global Climate Risk Index 2026: Pakistan 15th | Germanwatch’s Climate Risk Index 2026 (published November 2025; Dawn, 13 November), long-term ranking 1995–2024: Dominica, Myanmar, Honduras lead the top 10, with China 11th, Pakistan 15th, United States 18th. Trap: Pakistan’s 2024 single-year rank in the same report is 47th — the 15th is the 30-year figure, not the 2024 figure. |
| November | WMO State of the Climate Update for COP30 | The World Meteorological Organization’s update, presented at COP30: January–August 2025 averaged 1.42 °C above pre-industrial levels; 2025 was on track to be the second or third warmest year on record; the past 11 years (2015–2025) are the 11 warmest in the 176-year record; greenhouse-gas concentrations at record highs — CO₂ 423.9 ppm in 2024, up 3.5 ppm in one year, the largest rise since modern measurement began in 1957 (WMO Greenhouse Gas Bulletin, 16 October 2025 — the pre-COP science release; the Update itself was presented during COP30). |
| November | 2025 Antarctic ozone hole: 5th smallest since 1992 | NASA/NOAA (24 November 2025): the 2025 hole averaged 18.71 million km² (7.23 million sq mi) over 7 September – 13 October, peaked at 22.86 million km² on 9 September, ran ~30% smaller than the 2006 record largest, and broke up nearly three weeks earlier than the past decade’s average — the 5th smallest since 1992 (14th smallest since satellite records began in 1979). The bank’s “record highest contraction” wording is loose: the verified rank is 5th smallest since 1992, not a record. |
8B. The 2025 energy year — the retrospective table (origin year 2025) 🆕 2025
This table is a retrospective fold-in from the Current Affairs retrospective (coverage-audit item Slice 52, 2026-11-01): 2025’s energy developments that are still true and still askable, marked with their origin year, never presented as current news. Bank evidence: the gk360 monthly Current Affairs bank (17 files / 2,012 questions; script hidden_files/goldmine-notes-count-eds09-2025energy.py — 10 tight rows / 9 events cited below, held rows stated in Section 12, not counted). Every row is verified against a standard source named in the chapter footer; where the bank’s wording is loose, the verified wording is taught and the bank wording is corrected in Section 12, not taught. Four energy-adjacent 2025 rows are not repeated here — they already live where they belong: Power of Siberia 2 (2 September 2025), the Iran–IAEA Cairo Agreement (9 September 2025) and the Türkiye–US civil nuclear MoU (25 September 2025) in GK-11 Section 9C, and the US–Pakistan oil-reserves trade deal (30 July 2025) in GK-10 Section 8A; the Motuo mega-dam start (19 July 2025) lives in EDS-08 Section 7A and the NEV Policy (26 August 2025) in Section 8A above. No 🔁/⭐ mark is claimed for this table itself: one year’s CA-bank rows are not a multi-paper repeat pattern.
| Month 2025 | Development | The exam fact |
|---|
| 9 January | China: world’s first 300 MW compressed-air energy storage (CAES) plant fully on grid — Yingcheng, Hubei | The Nengchu-1 project (China Energy Engineering Corp) reached full-capacity grid connection on 9 January 2025: a single unit of 300 MW with 1,500 MWh storage, using two abandoned salt-mine caverns about 600 m deep (about 700,000 m³ of storage), expected to generate about 500 million kWh a year. The exam answer is China; the storage idea is air squeezed into caverns at low demand and released at peak demand. |
| June | Russia to build eight nuclear reactors in Iran — framework confirmed | Confirmed in June 2025 (AEOI chief Mohammad Eslami): an intergovernmental framework for eight units — four at Bushehr (home of Iran’s operating Russian-built reactor) and four in Hormozgan (the Sirik-area cluster, about 5 GW planned) — with a separate small-modular-reactor MoU signed in Moscow on 24 September 2025 (Eslami–Likhachev). Precision: this is a confirmed framework, not eight completed plants — the banks ask “which country is going to build”, and the answer is Russia. |
| August | Pakistan: White Oil Pipeline — ECC approves dollar-based guaranteed return | The Economic Coordination Committee approved dollar-based guaranteed returns for the 477 km Machike–Thallian–Tarujabba White Oil Pipeline (reported by Dawn, 2 September 2025): an ECC-considered cost of US$300 million, executed by SOCAR (Azerbaijan) + PSO + FWO under a ship-or-pay model for 7–8 million tonnes a year of petrol and diesel to the north. Later tariff petitions put the project cost higher (about US$431 million) — see Section 12; the bank’s figure is the ECC-approval figure. |
| September | Pakistan–China solar: 2.3 GW of MoUs at the Beijing B2B summit | At the 2nd China–Pakistan B2B Investment Summit, Beijing (September 2025), JinkoSolar signed MoUs totalling 2.3 GW with Pakistani energy groups for modules and battery storage, under the CPEC green-energy frame and Pakistan’s 30% renewable goal by 2030. Correction to the bank’s wording: these are company-level MoUs, not a state-to-state solar MoU — the bank’s answer (China) still holds. |
| October | China: world’s first dual-tower solar-thermal plant — Guazhou, Gobi Desert | China Three Gorges Corporation commissioned the west tower in October 2025 of the world’s first dual-tower solar-thermal plant at Guazhou, Gansu: two towers about 200 m tall, a shared field of about 27,000 heliostat mirrors, molten salt heated to about 570 °C so the plant generates after sunset, and about 25% higher efficiency than a single-tower design (one tower for morning, one for afternoon). The exam answer is the Gobi Desert. |
| 28 October | Japan–US: rare earths + next-generation nuclear framework, Tokyo | At Akasaka Palace, Tokyo, on 28 October 2025, President Donald Trump and Prime Minister Sanae Takaichi signed a framework agreement on critical minerals and rare earths supply and cooperation on next-generation nuclear reactors (AP1000 + SMRs) — Westinghouse-led reactor projects reported at up to US$100 billion. The bank’s answer is USA (Japan’s partner). |
| 7–8 + 25 November | Pakistan–Azerbaijan energy thread: Baku visit, then the SOCAR upstream invitation | Prime Minister Shehbaz Sharif visited Baku on 7–8 November 2025 (Victory Day anniversary) for trade, energy and defence talks; on 25 November in Islamabad he met Azerbaijan’s Economy Minister Mikayil Jabbarov, welcomed Azerbaijan’s interest in the White Oil Pipeline, and encouraged SOCAR to explore upstream oil and gas opportunities in Pakistan, alongside the proposed Pakistan–Azerbaijan Joint Investment Company and the Roadmap on Cooperation 2025–2028. The bank’s answer — exploring oil and gas investment opportunities — is the 25 November invitation, not a single signed deal. |
| 11 November | India–Bhutan: Punatsangchhu-II hydropower inaugurated — 1,020 MW | Prime Minister Narendra Modi and King Jigme Khesar Namgyel Wangchuck jointly inaugurated the 1,020 MW Punatsangchhu-II Hydroelectric Project on 11 November 2025: a run-of-the-river plant on the Punatsangchhu River in Wangdue Phodrang district, jointly developed by India and Bhutan, its final unit synchronised on 27 August 2025. The bank’s answer is Bhutan. |
| 20 November | ADB: US$330 million for Pakistan’s clean-energy transmission | The Asian Development Bank approved US$330 million on 20 November 2025 for Pakistan’s Second Power Transmission Strengthening Project — US$285 million ordinary + US$45 million concessional — building a new 500 kV, ~290 km transmission line and upgrading grid infrastructure serving Islamabad and Faisalabad, to carry up to 3,200 MW of northern hydropower to load centres and cut reliance on imported fuels. The bank asks it twice (amount and institution) — one event, two rows. |
9. Master timeline — energy and environment in order
| Year | Fact |
|---|
| 1938 (era) | Malakand Dargai — Pakistan’s oldest hydroelectric project (year not keyed; the name is) |
| 1987 | Montreal Protocol agreed (16 September); ozone protection begins |
| 1989 | Montreal Protocol in force (1 January) |
| 1992 | Rio Earth Summit; UNFCCC adopted |
| 1994 | UNFCCC in force |
| 1997 | Kyoto Protocol adopted (11 December) |
| 2005 | Kyoto Protocol in force (16 February — the standard date; see the trap below) |
| 2015 | Paris Agreement adopted (12 December) |
| 2016 | Paris Agreement in force (4 November); goal well below 2 °C, pursuing 1.5 °C |
| 6 Feb 2025 | First African Urban Heat Summit, Freetown; Africa’s first Heat Action Plan launched (Section 8A) |
| 24–25 Feb 2025 | Prakriti 2025, New Delhi — India’s first International Conference on Carbon Markets (Section 8A) |
| 4 Mar 2025 | US withdraws from the Loss & Damage Fund board; Fund created at COP27, 2022 (Section 8A) |
| Jun–Jul 2025 | First Falepili Union ballot: up to 280 Tuvaluans a year to Australia (Section 8A) |
| 26 Aug 2025 | Pakistan launches NEV Policy 2025–30 (Section 8A) |
| 3–7 Nov 2025 | MOP37, Nairobi — Montreal Protocol parties meet, 20 decisions (Section 8A) |
| Nov 2025 | Climate Risk Index 2026: Pakistan 15th (1995–2024); WMO COP30 update; 2025 ozone hole 5th smallest since 1992 (Section 8A) |
| 9 Jan 2025 | China CAES first: Nengchu-1, Yingcheng — 300 MW / 1,500 MWh, salt caverns (Section 8B) |
| Jun 2025 | Russia–Iran: eight-reactor framework confirmed — 4 Bushehr + 4 Hormozgan (Section 8B) |
| Aug 2025 | White Oil Pipeline: ECC dollar-return approval, 477 km, US$300m, SOCAR + PSO + FWO (Section 8B) |
| Sep 2025 | Pakistan–China solar: JinkoSolar 2.3 GW MoUs, Beijing B2B summit (Section 8B) |
| Oct 2025 | Gobi dual-tower solar-thermal: Guazhou, two 200 m towers, ~27,000 mirrors (Section 8B) |
| 28 Oct 2025 | Japan–US: rare earths + AP1000/SMR framework, Akasaka Palace (Section 8B) |
| 7–8 + 25 Nov 2025 | Pakistan–Azerbaijan energy thread: Baku visit, then SOCAR upstream invitation (Section 8B) |
| 11 Nov 2025 | Punatsangchhu-II: 1,020 MW inaugurated, India–Bhutan, Wangdue Phodrang (Section 8B) |
| 20 Nov 2025 | ADB US$330m: Second Power Transmission Strengthening, 500 kV ~290 km, 3,200 MW (Section 8B) |
10. Rapid-fire one-liners
- Renewable = continuously produced in nature, essentially inexhaustible. Non-renewable = fixed stock: fossil fuels + uranium.
- Tough GK residue: UNCCD 1994/1996 (desertification, third Rio convention) · US Paris out 4 Nov 2020, back 19 Feb 2021 · largest oil producer 2024 = USA (13.2m bpd) · Pakistan among top-10 climate-vulnerable (rank varies by index).
- Renewable list question (Wind, Solar, Tidal) → All of these. Non-renewable list question → Fossil Fuels.
- NOT a fossil fuel (Coal, Natural gas, Oil, Solar energy) → Solar energy.
- Solar cells convert solar (light) energy into electricity. Element for solar conversion: Silicon. Solar cells mainly made of: Silicon.
- Solar + hydel = friendly to the environment (bank key). Wind energy = kinetic energy.
- Largest hydel power station in Pakistan: Tarbela. Oldest hydroelectric project: Malakand Dargai.
- Energy crisis in Pakistan (circular debt, imported fuel, power theft) → All of these.
- Distant-future main energy source (older bank paper) → atomic energy.
- Smog = smoke + fog. Industrial-city smog deaths → lung and heart diseases (both).
- Smog, NO₂, SO₂, dust as a source → Primary pollution. CO binds in blood to haemoglobin.
- Normal rain pH: 5.6. Acid rain: pH below 5.6. Acid rain acids: sulphuric + nitric (both).
- Acid rain cause gases: SO₂ and NOₓ from burning fossil fuels. Acid rain → soil pollution (capsule key).
- Gas mainly causing global warming: Carbon dioxide. Main greenhouse gases: CO₂, methane, water vapour, nitrous oxide.
- Ozone layer: stratosphere, about 50 km (bank figure); blocks ultraviolet rays. Gas affecting it: CFCs.
- Montreal Protocol: 1987 (in force 1989) — ozone. Kyoto Protocol: adopted 1997, in force 2005 — pollution/emissions.
- Paris Agreement: adopted 2015, in force 2016 — well below 2 °C, pursuing 1.5 °C. UNFCCC: Rio 1992.
- Kyoto signatories question (Germany, France, Japan) → All of the above.
- Most polluted country: Peru (Pakistan second). Most polluted city: Mexico. Most polluted lake: Lake Erie. Most polluted river of Pakistan: Ravi.
- Coal ranks, low to high: Peat → Lignite (brown coal) → Bituminous → Anthracite (highest carbon, highest calorific value). Bituminous = used on a mega scale, electricity and steel.
- Petroleum refining: first process distillation, furnace about 400 °C; products petrol, diesel, kerosene, lubricants; by-products by use — bitumen → roads, aviation fuel → aircraft, LPG → cooking.
- CNG = same composition as Sui gas (methane). Largest LNG exporter: USA. Pakistan’s first LNG import: 2015; largest terminal: Port Qasim, Karachi.
- Fission trigger: neutron impact; fusion happens naturally in the Sun (fuel: deuterium + tritium). Carbon-14 half-life: 5,730 years.
- Biogas 🆕 2026 trend: methane + CO₂, from anaerobic decomposition. Geothermal most used: Iceland. Largest hydro dam: Three Gorges (China). Pakistan’s first wind project: Jhimpir, Sindh (2009).
- Ecosystem (Section 15A): biotic = living, abiotic = non-living; producers = green plants, decomposers = bacteria & fungi, energy pyramid always upright; biodiversity = genetic + species + ecosystem; richest in tropical rainforests; habitat destruction = major loss cause; IUCN Red List = conservation status; in-situ = natural habitat, ex-situ = zoos.
- Waste (Section 15A): 3Rs = Reduce, Reuse, Recycle; biodegradable by microorganisms, plastic non-biodegradable; composting = organic-waste recycling; e-waste = toxic metals (lead, mercury, cadmium); biomedical waste from hospitals; EIA before project approval; noise in decibels; eutrophication = excess nutrients (nitrates + phosphates).
- Conventions (Section 15A): Vienna 1985 = ozone framework; Ramsar 1971 = wetlands, Indus Delta 472,800 ha; CBD = Rio 1992; Brundtland 1987 = Our Common Future, sustainable development defined; CDM under Kyoto; Pakistan UNFCCC signed 1992, ratified 1994.
- 2025 climate year (Section 8A): Freetown heat summit 6 Feb · Prakriti carbon-markets conference, New Delhi 24–25 Feb · Pakistan US$348bn (2023–2030: 152 + 196) · US quits Loss & Damage Fund board 4 Mar (Fund: COP27, 2022) · Falepili ballot Jun–Jul, 280/yr to Australia · Pakistan NEV Policy 2025–30, 26 Aug · MOP37 Nairobi 3–7 Nov · Climate Risk Index 2026: Pakistan 15th (1995–2024; 2024 single-year 47th) · WMO COP30 update: 1.42 °C (Jan–Aug 2025), 11 warmest years 2015–2025 · 2025 ozone hole 5th smallest since 1992.
- 2025 energy year (Section 8B): China CAES first, Yingcheng 9 Jan — 300 MW / 1,500 MWh · Russia–Iran eight reactors, Jun (4 Bushehr + 4 Hormozgan) · White Oil Pipeline ECC approval, Aug — 477 km, US$300m, SOCAR + PSO + FWO · Pakistan–China solar 2.3 GW MoUs, Sep, Beijing · Gobi dual-tower solar-thermal, Oct — Guazhou, two 200 m towers · Japan–US rare earths + nuclear framework, 28 Oct, Tokyo · Pakistan–Azerbaijan SOCAR upstream invitation, 25 Nov · Punatsangchhu-II 1,020 MW, 11 Nov, Bhutan · ADB US$330m transmission, 20 Nov — 500 kV, ~290 km, 3,200 MW.
11. Most-asked facts (from our verified past-paper banks)
- The CO₂–global-warming question is the single most repeated question in this topic — four papers, identical wording, identical key. If you learn one climate fact, learn that one.
- The ozone pair runs just behind it: ozone blocks ultraviolet rays (five papers) and the ozone layer sits in the stratosphere (bank figure: about 50 km). CFCs are the gas that damages it.
- The Kyoto trio — “talks about Pollution”, “signed and ratified: All of the above”, and the 1987 Montreal treaty question — is asked as a set in the FPSC papers; the treaty table in Section 8 is built for exactly this set.
- On energy, the renewable-definition question (“continuously produced in nature, essentially inexhaustible”) and the hydel questions (largest Tarbela, oldest Malakand Dargai, cheapest split) are the repeaters; the solar questions are fewer (6) but perfectly predictable — silicon, every time.
- The pollution superlatives (Peru / Mexico / Lake Erie / Ravi) are asked as a block in the older FPSC papers — they reward memorising the four keys together, not reasoning about current rankings (Section 12).
- The new repeater in this chapter’s set is biogas composition 🆕 2026 trend: methane + CO₂ in three PPSC PMS papers in 2026 (clubbed-case morning, phase 1, SGAD) after a single 2021 paper — the one 2025–26 cluster in the Section 15 expansion. The coal-rank, refining and world-renewables questions behind Section 15 are booklet-led so far (one PPSC paper each at most) and are taught as tables to memorise, not as paper-repeaters — no 🔁 claim is made for them.
- The 2025 climate year (Section 8A) is the chapter’s retrospective layer, not a new repeater: its 10 rows are backed by the gk360 monthly CA bank (February, March, April, August, November and December 2025 files), and the next paper round asks them exactly the way the CA bank does — host, figure, treaty, rank. COP30’s host stays in GK-11 Section 9A; this chapter owns the climate substance around it (finance, migration, ozone, the WMO science).
- The 2025 energy year (Section 8B) is the companion retrospective layer, not a new repeater: its 10 rows / 9 events are backed by the gk360 monthly CA bank (January, June, August, September, October and November 2025 files), and the next paper round asks them exactly the way the CA bank does — country, figure, pipeline, project name. The four cross-linked rows (Siberia 2, Iran–IAEA, Türkiye–US, US–Pakistan oil) stay in GK-11 Section 9C and GK-10 Section 8A; this section owns the energy hardware and finance around them (storage, reactors, pipelines, transmission).
12. Traps & confusions
- Kyoto enforcement date — the bank’s wrong key: one bank paper keys May 2006 for “Kyoto Protocol enforced from”. The standard date, verified against standard references, is 16 February 2005 (adopted 11 December 1997). The paper’s options (February 2008, March 2010, April 2009, May 2006) do not contain 2005 at all — so on that paper the keyed answer is May 2006, but the fact to learn and to answer everywhere else is 2005. If 2005 appears among the options, pick 2005.
- Cheapest source of energy — the banks split: one paper keys Hydel (options: Hydel, Solar [misspelled “Soplar”], Atomic), another keys Solar (options: Thermal, Solar, Hydel, Atomic). There is no single bank-consistent answer: when both Hydel and Solar appear, the more recent paper keys Solar; when the question is framed around Pakistan’s existing dams, Hydel is the classic textbook answer. Learn the split, not just one word.
- Largest hydel station — Tarbela vs Warsak: one older paper keys Warsak, but Tarbela is absent from that paper’s options (Warsak, Dargai, Rasul, Nandipur). The standard answer is Tarbela — pick Warsak only if Tarbela is not among the options.
- Pollution superlatives are dated keys: Peru as most polluted country, Mexico as most polluted city, and Pakistan second are older papers’ rankings, not current ones (modern air-quality rankings name different cities and countries). They are taught here because the papers repeat them with the same options — in the exam hall, answer the bank key, not the news. The Ravi (Pakistan) and Lake Erie keys are stable across papers.
- Ozone: high vs low: stratospheric ozone protects (blocks UV); ground-level ozone in photochemical smog irritates (lungs, eyes). Same molecule, opposite verdict — the question’s altitude decides.
- Greenhouse effect vs global warming: the greenhouse effect is the mechanism (gases trapping heat); global warming is the result (rising average temperature). A question asking “what is the greenhouse effect” wants the mechanism; a question asking “what causes global warming” wants CO₂.
- CO₂ vs methane: methane is stronger per molecule, but the papers’ “mainly causing global warming” key is carbon dioxide — quantity beats potency in the banks’ framing. Do not pick methane for that wording.
- Indus Delta is NOT Pakistan’s largest Ramsar site (Section 15A correction): the mock keys Indus Delta for ‘largest Ramsar site in Pakistan’, but the Ramsar Sites Information Service lists Rann of Kutch at 566,375 ha, larger than the Indus Delta’s 472,800 ha — so on a standard-reference question the largest is Rann of Kutch, and Indus Delta is the area figure (472,800 ha, designated 5 November 2002) to learn. Answer Indus Delta only if the options exclude Rann of Kutch and ask for the delta site itself.
- Main warming gas vs highest GWP (Section 15A): Section 7’s ‘mainly causing global warming’ key is CO₂ (quantity). The mock’s ‘highest global warming potential’ question, among CO₂ / methane / nitrous oxide / water vapour, keys nitrous oxide (about 273 times CO₂ over 100 years, per the mock’s keyFlag) — water vapour is the most abundant greenhouse gas but is not assigned a GWP because it is short-lived. The two questions ask different things: main driver = CO₂, highest GWP among the listed gases = nitrous oxide. CFCs beat nitrous oxide when they appear (Grand Mock 13 residue, added 2026-11-03): among options that include chlorofluorocarbons, the CFCs win on GWP per molecule — their GWPs run into the thousands of times CO₂ (CFC-11 ~4,660, CFC-12 ~10,200 over 100 years, IPCC figures). The Section 15A nitrous-oxide answer was for a set with no CFCs in it.
- UNFCCC signature vs ratification (Section 15A): 1992 = Pakistan’s signature (Rio, June 1992); 1994 = ratification — and also the year the Convention itself entered into force (21 March 1994). A question asking ‘signatory in’ wants 1992; a question asking ‘ratified in’ wants 1994.
- CNG is not a different gas: CNG’s composition is the same as Sui gas — methane. A question offering methane and Sui gas as separate options is offering the same answer twice; pick the wording the question uses.
- Bitumen is not a fuel fraction: bitumen/asphalt is the road-building by-product of refining. If the question asks what vehicles burn, the answer is petrol/diesel, never bitumen.
- Fission vs fusion: fission splits (uranium in reactors, triggered by a neutron); fusion joins (hydrogen isotopes in the Sun). The Sun’s energy is fusion, never fission.
- Sub-bituminous sits between lignite and bituminous in the standard rank order — but the banks ask only peat, lignite, bituminous and anthracite, so do not let a sub-bituminous option displace the four-rank ladder.
- “Seismograph” contains “smog” as a substring (sei-smog-raph): two instrument questions were caught by a careless keyword count for this chapter and removed. In the exam hall the same trap works in reverse — read the whole question before reaching for the pollution chapter.
- Solar system vs solar energy: questions about the solar system, solar eclipses and solar flares belong to Chapter 1 (Universe), not here — this chapter’s solar questions are only about energy conversion and silicon.
- Acid rain pH: normal rain is 5.6; acid rain is below 5.6. A question offering “5.6” as the pH of acid rain is wrong — 5.6 is the threshold, and acid rain sits under it.
- Montreal vs Kyoto vs Paris: Montreal = ozone (1987), Kyoto = emissions targets (1997/2005), Paris = all nations, below 2 °C (2015/2016). The banks set them against each other as options — the year and the subject together identify the treaty.
- 2025 climate year — bank wording corrected, not taught (Section 8A): the CA bank’s “US withdrew from the Loss & Damage Fund” is taught precisely as withdrawal from the Fund’s board (4 March 2025 letter) — the letter does not state withdrawal from the Fund itself, and the US$17.5 million pledge question is separate; its “Pakistan requires $348 billion by 2030” is taught as the 2023–2030 total (US$152bn adaptation + US$196bn decarbonisation), not a 2030 single-year need; its “record highest contraction” of the ozone hole is taught as 5th smallest since 1992 (NASA/NOAA, 24 November 2025); its “first ever international conference on carbon markets” is taught as India’s first (Prakriti 2025, New Delhi), not the world’s; its WMO “ahead of COP30” framing is split honestly — the Greenhouse Gas Bulletin (16 October 2025) was the pre-COP release, while the State of the Climate Update was presented during COP30; and the Climate Risk Index “15th” is the 1995–2024 long-term rank — Pakistan’s 2024 single-year rank is 47th, a different index in the same report.
- 2025 energy year — bank wording corrected, not taught (Section 8B): the CA bank’s “Pakistan signed an MoU with China for solar energy cooperation” is taught precisely as company-level MoUs — JinkoSolar’s 2.3 GW agreements at the September 2025 Beijing B2B summit — not a state-to-state MoU; the bank’s answer (China) still holds. Its “White Oil Pipeline US$300 million” is the ECC-approval figure — later tariff petitions put the project at about US$431–432 million (437 km in the petition papers, 477 km in the approval reporting; teach the bank’s 477 km / US$300m pair as the approval-stage fact). Its “Japan and which country signed a rare earth mineral and nuclear deal” is the 28 October 2025 framework agreement at Akasaka Palace — a framework on supply and reactor cooperation, not a signed reactor construction contract. Its “which country is going to build eight nuclear reactors in Iran” is the confirmed framework (June 2025, plus the September SMR MoU) — eight units planned, not built. The Gobi mirror figure is reported as about 27,000 heliostats (one agency report counts “more than 20,000” for the commissioned west tower) — teach 27,000 as the reported field figure, not as a counted exactness.
- 2025 energy year — rows held, not taught (Section 8B): the August 2025 CA bank’s “Pakistan signed an MoU with Germany for renewable energy cooperation on 6 August 2025” is held — no 6 August MoU is corroborated; the verified Pakistan–Germany energy event of late 2025 is the November 2025 bilateral-negotiations commitment of €114 million under the Climate and Energy Partnership, a separate later event, not filed as the August MoU. The January 2025 India–Pakistan nuclear-installation list exchange is a standing annual exchange under the 1988 agreement, not a 2025 development, and is not counted here. The nuclear-weapons rows (SIPRI yearbook pair, Operation Midnight Hammer, the INF-treaty exit, the Venezuelan tanker seizure, the Hormuz tanker fire) belong to the security/war slices, not to energy; the NASA lunar-reactor row belongs to the space slice; the International Day against Nuclear Tests (29 August) is an annual observance, not a 2025 event.
- 2025 climate year — rows held, not taught (Section 8A): the December 2025 CA bank’s climate-corruption flags row (India, Bangladesh, Pakistan) is a single row whose explanation cites only vague “[cite:]” placeholders with no identifiable watchdog — held as unverified, not filed as a fact; the COP30 host row (Brazil) is already taught in GK-11 Section 9A and is cross-linked, not duplicated; the January 2025 hydrogen-train row (India) belongs to transport/technology, not climate policy, and is not counted here; the September 2025 World Ozone Day theme/date rows are an annual observance, not a 2025 event, and are not counted as one.
13. Memory tricks (clean professional hooks — no lecture unit exists for this topic, so these are built from the definitions themselves)
- RENEW = RE-NEW: renewable sources re-new themselves — sun rises again, wind blows again, rivers flow again, tides return. Non-renewable sources do not re-new: coal burned is coal gone.
- SILICON = SOLAR’S SILICON: solar cells are silicon, and the Sun’s light is silver-white — Si for Silicon, the element symbol and the answer in one syllable. Three bank papers ask it; all three answer silicon.
- SMOG = SMOKE + FOG: the word is its own definition — split it in half and you have the answer to “what is smog”.
- 5.6 is the line: normal rain sits on 5.6; acid rain falls below the line. Picture a line at 5.6 on the pH scale and acid rain dropping underneath it.
- MONTREAL = OZONE, KYOTO = EMISSIONS, PARIS = EVERYONE: Montreal protects the layer above (ozone), Kyoto binds the emitters (developed countries’ targets), Paris brings everyone in (all nations, below 2 °C). Three treaties, three one-word jobs.
- 1987 – 1997 – 2015: the treaty decades step by ten, then eighteen — 87 ozone, 97 emissions, 15 everyone. And Kyoto’s in-force year 2005 is eight years after adoption — the long wait for ratification is the story of the treaty.
- CO₂ = the main warming gas: carbon dioxide is the Common one — C for Common, C for Carbon dioxide, the gas in every warming question’s key.
- TARBELA = the big dam, DARGAI = the old dam: Tarbela is the Tallest claim (largest station); Dargai is the Dated one (oldest project). Largest and oldest are the two hydel facts — one letter each.
- PERU – MEXICO – ERIE – RAVI: the pollution superlatives in one breath — country Peru, city Mexico, lake Erie, river Ravi. Four keys, one line, learned together because the papers ask them together.
- PRIMARY = FIRST OUT OF THE CHIMNEY: primary pollutants are primary because they come first, straight from the source — smog, SO₂, NO₂ and dust are emitted, not made later in the sky.
- PEAT → LIGNITE → BITUMINOUS → ANTHRACITE: youngest to oldest, softest to hardest. Carbon climbs as water leaves: peat is the baby coal (wet, low carbon), anthracite the adult (hard, highest carbon, hottest burn). PLBA — Peat, Lignite, Bituminous, Anthracite — in that order, never reversed.
- BIOGAS = METHANE + CO₂: the gas that comes from rot has two names in the answer. If the options offer methane alone, take it; if they offer methane + CO₂, take the pair — the 2026 papers want the pair.
- ECOSYSTEM = ECO + SYSTEM: the ecosystem is the whole system — living (biotic) + non-living (abiotic) together. Producers PRODUCE, decomposers DECOMPOSE: plants produce the food, bacteria and fungi decompose what is left — and the energy pyramid never flips, because energy only ever leaks upward.
- 3Rs in order — REDUCE first: Reduce (use less) comes before Reuse (use again) and Recycle (reprocess) — the order is the priority, not just a list. VIENNA 85, RAMSAR 71, BRUNDTLAND 87: ozone’s framework (85), wetlands (71), the definition (87) — three convention years, three one-word jobs.
- 2025 CLIMATE YEAR — FREETOWN, PRAKRITI, NAIROBI: three city names carry the year — Freetown (heat, February), Prakriti/New Delhi (carbon markets, February), Nairobi (MOP37, November) — and two numbers carry Pakistan’s half of it: 348 (billion, 152 + 196) and 15th (Climate Risk Index, long-term). Add Australia (Falepili, 280 a year) and 5th smallest since 1992 (ozone) and the whole Section 8A table is one breath.
- 2025 ENERGY YEAR — CAES, WHITE OIL, GOBI, ADB: four anchors carry the year — 300 (MW, Yingcheng CAES, January) · 477 (km, White Oil Pipeline, August) · two towers (Gobi, October) · 330 (million, ADB transmission, November). Add 1,020 (MW, Punatsangchhu-II, Bhutan) and 2.3 (GW, Pakistan–China solar MoUs) and the whole Section 8B table is one breath.
14. Visuals (site build specs)
- INFOGRAPHIC — The two energy families: two columns (renewable: solar, wind, hydel, geothermal, biomass, tidal — each with its mechanism icon; non-renewable: coal, oil, gas, uranium) with the banks’ definition sentence across the top — placed in Section 1 as the chapter’s orientation graphic.
- DIAGRAM — How a solar cell works: sunlight striking a silicon cell, electrons knocked loose, current flowing out — labelled light energy → electrical energy, with “silicon” on the cell itself — placed in Section 3.
- DIAGRAM — Acid rain formation: factory/vehicle chimneys emitting SO₂ and NOₓ, clouds forming sulphuric and nitric acids, rain falling at pH below 5.6 onto forest, lake and building — placed in Section 6.
- TIMELINE — The climate treaties: horizontal band Montreal 1987 → Rio 1992 → Kyoto 1997/2005 → Paris 2015/2016, each with its one-word job (ozone / framework / targets / everyone) — placed in Section 8 as the revision graphic students screenshot.
- TABLE-GRID — Pollution superlatives: the Section 4 superlative table rendered as a four-card grid (country Peru, city Mexico, lake Erie, river Ravi) with the dated-key note — placed in Section 4.
- DIAGRAM — The coal-rank ladder: four rungs peat → lignite → bituminous → anthracite, each labelled with its bank key (first stage / brown coal / mega scale + electricity & steel / highest carbon + highest calorific) and an arrow marked “carbon and heat rise, moisture falls” — placed in Section 15.1.
- DIAGRAM — The refinery column: crude oil in at ~400 °C, fractions out (petrol, diesel, kerosene, lubricants) with the three by-product uses beside them (bitumen → roads, aviation fuel → aircraft, LPG → cooking) — placed in Section 15.2.
- TIMELINE CARD — The 2025 climate year: the Section 8A table as a month-by-month timeline (Feb Freetown + Prakriti → Mar Loss & Damage board withdrawal → Jun–Jul Falepili ballot → Aug NEV Policy → Nov MOP37 + Climate Risk Index + WMO update + ozone ranking), each stop showing host, figure or rank — placed in Section 8A as the chapter’s current-year anchor.
- DIAGRAM — The ecosystem food web: producers (green plants) at the base, herbivore consumers above, bacteria/fungi decomposers returning matter to the soil, with the energy pyramid drawn upright beside it and the 3Rs (Reduce → Reuse → Recycle) as a loop arrow for the waste side — placed in Section 15A as the section’s single revision graphic.
- TIMELINE CARD — The 2025 energy year: the Section 8B table as a month-by-month timeline (Jan Yingcheng CAES → Jun Russia–Iran reactors → Aug White Oil Pipeline → Sep Beijing solar MoUs → Oct Gobi dual-tower + Tokyo framework → Nov Baku/SOCAR thread + Punatsangchhu-II + ADB transmission), each stop showing country, figure or project name — placed in Section 8B as the chapter’s energy-year anchor.
15. Fossil fuels and renewables at full depth — coal ranks, petroleum refining, natural gas, nuclear notes, world renewables
Sections 1–2 taught the two families and the one-row version of each fuel. This section is the depth the audit flagged as missing: the banks ask the inside of each fuel — coal’s ranks, oil’s refining, gas’s composition, the reactor’s trigger, and the world map of renewables. Evidence is counted from the full bank set (591 files / 56,776 questions, script hidden_files/goldmine-notes-count-eds-exp.py): coal ranks 10 stems / 6 files; petroleum refining 7 genuine stems / 5 files (two Petroleum Amendment Act rows excluded — a current-affairs item, not refining); natural gas 15 stems / 18 files (the CNG/LNG full forms themselves already live in GK-07); nuclear depth 22 stems / 23 files (reactor machinery already lives in Chapter 6 Section 9); wind/hydel/geothermal/biomass 43 stems / 20 files (wind-kinetic and hydel basics already live in Sections 1–2). Only the not-yet-taught slice is written below. Exam Trend for this section: no 🔁 or ⭐ mark is claimed for these blocks — their exam-paper footprint is thin (one or two papers each) and the rest is practice-set material, stated honestly; the single exception is 🆕 2026 trend — biogas composition (see Section 15.5), asked in three PPSC PMS papers in 2026 after a single 2021 paper.
15.1 Coal ranks — youngest to oldest, softest to hardest
Coalification is burial, heat and pressure driving water and volatile matter out of plant material, so carbon content and calorific value rise together as moisture falls. The banks test four ranks, in this order:
| Rank (low → high) | Bank key | What the papers ask |
|---|
| Peat | First stage of coal formation; earliest form of coal; lowest carbon content | ”Which type of coal represents the first stage of formation?” → Peat |
| Lignite | Brown coal | ”Lignite coal is also called?” → Brown coal |
| Bituminous | The coal used on a mega scale; mainly used for electricity and the steel industry | ”Which type of coal is used on a mega scale?” → Bituminous (PPSC Food Grain Supervisor 2023) |
| Anthracite | Highest carbon content; highest calorific value | ”Which type of coal has the highest calorific value / highest carbon content?” → Anthracite |
- The standard classification inserts sub-bituminous between lignite and bituminous; the banks ask only the four ranks above, so learn the four and know sub-bituminous’s position only as a neighbour.
- Rank order verified against a standard reference check (peat < lignite < bituminous < anthracite in carbon and heat content), matching every bank key above.
15.2 Petroleum refining — fractional distillation
- Crude oil is refined by fractional distillation: the first process in a petroleum refinery is distillation, and during it crude oil is typically heated in a furnace to approximately 400 °C (PPSC PMS 2019).
- The products the banks name, in one list: petrol, diesel, kerosene and lubricants — and petrol is the fossil fuel the booklet asks as “obtained through fractional distillation of crude oil”.
- The by-products are asked by use, not by name: bitumen / asphalt → roads; aviation fuel → aircraft; LPG → cooking. The trap is to call bitumen a fuel — it is the road-building by-product, not what vehicles burn.
- Largest oil producer (PMS Screening 2026 Tough GK Mock, Q13; mock-only bank row, no mark claimed): in 2024 it was the United States — record crude output of 13.2 million barrels a day (US Energy Information Administration), ahead of Saudi Arabia and Russia. Do not confuse it with the Gulf’s largest producer (Saudi Arabia, GK-01) — the world answer is the US.
15.3 Natural gas — CNG, LNG and methane
- CNG = Compressed Natural Gas; LNG = Liquefied Natural Gas (full forms taught in GK-07, not repeated as new material here).
- The composition fact the papers actually test: CNG has the same chemical composition as Sui gas — two papers key “Sui gas” directly (PPSC Ziladar 2020; PPSC Assistant Sub-Inspector 2021), and Sui gas is methane. So: CNG = compressed methane, the same gas Pakistan’s Sui fields supply.
- Largest exporter of liquefied natural gas: the United States (USA) — keyed in two 2024 papers (PPSC Consolidation Officer; PPSC Protocol Assistant) and a 2021 paper. Do not answer Qatar or Australia for this wording; the banks’ current key is the USA.
- Pakistan’s LNG facts, booklet-sourced: the first LNG import was in 2015, and the largest LNG terminal is at Port Qasim, Karachi.
15.4 Nuclear notes — what this chapter adds to Chapter 6 Section 9
Reactor machinery (moderator, boron control rods, enriched uranium, PAEC, KANUPP, Chashma) is taught in Chapter 6 Section 9 and is not repeated here. What the banks add, in this topic’s set:
- Nuclear fission is caused by the impact of a neutron (PPSC Assistant Librarian 2026) — the trigger word is neutron, and the energy produced in a fission reaction in a reactor is thermal energy (PPSC Municipal Officer 2025).
- Nuclear fusion takes place naturally in the Sun, and the fuel of a fusion reactor is hydrogen isotopes (deuterium and tritium) — fission splits heavy nuclei (reactors), fusion joins light ones (the Sun). Keep the pair straight: reactors = fission, Sun = fusion.
- Nuclear waste is usually stored in deep underground storage (booklet key).
- Half-life of carbon-14: nearly 5,730 years (PPSC Food Grain Supervisor 2023); the decay relation the PMS 2026 paper tests is λ = ln(2) / T½.
15.5 World renewables — the booklet’s geography of energy
- Geothermal = heat from inside the Earth (already in Section 2). The banks’ world facts: the country that uses geothermal energy the most is Iceland; the world’s largest geothermal plant is in California, USA; the world’s first geothermal plant was built in Italy (1904).
- Biomass = plant and animal waste (already in Section 2). Added facts: biomass is converted to ethanol by fermentation, and biogas is produced by anaerobic decomposition of waste — composition methane + CO₂ 🆕 2026 trend: asked in three PPSC PMS papers in 2026 (clubbed-case morning, phase 1, SGAD) after a single 2021 paper. Section 2’s “biogas is mainly methane” is completed, not contradicted, by the CO₂ second component.
- Wind: converted to electricity using wind turbines; the country with the most wind turbines installed, and the largest wind-power producing country, is China (booklet keys); wind energy’s main disadvantage is irregular supply. Pakistan’s facts: the first wind power project was set up at Jhimpir, Sindh (2009), and wind-power potential in Pakistan is highest in Sindh (Gharo, Jhimpir).
- Hydro: the largest hydroelectric dam in the world is the Three Gorges Dam (China); the world’s largest producer of hydroelectric power is China; the first hydroelectric plant in the world was built in Appleton, Wisconsin, USA (1882). Pakistan’s hydel stations stay in Section 2 — Tarbela largest, Malakand Dargai oldest.
15A. Ecosystem, biodiversity and waste management — the environmental-science core the PMS mock surfaces
This section is a coverage-audit fold-in (2026-11-03, PMS Screening 2026 Environmental Science subject mock, 100 items, Sir Adnan booklet ‘PMS GK Environmental Science Mock Test’): the mock’s items were chapter-checked against this chapter and the rest of the Everyday Science chapters, and the blocks below are the genuinely missing core — ecosystem and food-web vocabulary, biodiversity and conservation, waste management, sustainable resource use, and the environmental conventions this chapter’s treaty table (Section 8) does not yet carry. Items already taught elsewhere are cross-linked, not repeated: Montreal, Kyoto, Paris and the UNFCCC/Rio framework stay in Section 8; smog, acid rain and the pollution types stay in Sections 4–6; the greenhouse effect, CO₂ as the main warming gas and the ozone layer stay in Section 7; World Environment Day (5 June) stays in GK-07; the decibel as the noise unit stays in EDS-06; cholera as a water-borne disease stays in EDS-04; the troposphere as the wettest atmospheric layer stays in GEO-03; biotic/abiotic groundwork stays in EDS-02. No 🔁/⭐/🆕 mark is claimed for this section: the bank-evidence script below finds the families thin in exam papers (ecosystem 21 rows / 20 files over 608 files / 58,098 questions, with archive duplicates inside that count; biodiversity 8 rows / 6 files; waste families 1 row; EIA, pyramid of energy, microplastics, Brundtland and CBD zero direct rows) — the section is mock-led teaching material, taught as standard definitions, not as a paper-repeater. BankCount stays 73.
15A.1 The ecosystem and its food web
- An ecosystem is a community of living organisms together with the non-living components of their environment, interacting as a system. The living components are biotic factors; the non-living components — air, water, soil, sunlight — are abiotic factors. The biosphere is the zone of life itself: all living beings and their habitats, from the deepest oceans to the upper atmosphere. The lithosphere — the solid outer layer, crust plus uppermost mantle — is taught in EDS-02.
- Ecology is the study of the interaction between organisms and their environment.
- Producers in an ecosystem are green plants: they make food by photosynthesis (sunlight + water + carbon dioxide → glucose + oxygen; the chemistry is taught in EDS-03 Section 9A). Consumers eat other organisms; consumers that eat only plants are herbivores. Decomposers are mainly bacteria and fungi, breaking dead organic matter back into the system.
- The pyramid of energy is always upright: energy is lost at each trophic level, so each level above holds less usable energy than the level below. No inverted energy pyramid exists.
- The water cycle is the movement of water through evaporation, condensation and precipitation. Photosynthesis is the process by which plants make food; the richest biodiversity on Earth is found in tropical rainforests.
15A.2 Biodiversity and conservation
- Biodiversity covers variety at all three levels: genetic diversity, species diversity and ecosystem diversity.
- The major cause of biodiversity loss is habitat destruction. Endangered species are those at risk of extinction. The IUCN Red List shows the conservation status of species.
- In-situ conservation means conserving species in their natural habitat; ex-situ conservation means conserving them outside it — zoos are the textbook ex-situ example. Biosphere reserves aim to promote sustainable use alongside conservation.
- A carbon sink is a carbon storage system — a forest or an ocean — that absorbs more carbon than it releases; forests act as carbon sinks through photosynthesis. A carbon footprint measures the greenhouse gas emissions caused by an activity or product; an ecological footprint indicates the environmental impact of a person or population.
- Plastic pollution mainly affects marine life (ingestion and entanglement). Microplastics are plastic particles smaller than 5 mm.
- Climate change mostly affects poor communities, which have the fewest resources to adapt. Climate adaptation means adjusting to climate impacts; climate mitigation aims to reduce greenhouse gas emissions.
15A.3 Pollution beyond Sections 4–6: water, waste and noise
- Water pollution is the contamination of water bodies (rivers, lakes, oceans); industrial waste discharged into rivers is a major source of it. Sewage water mainly contains organic matter. Purification is the process of making water fit for use.
- Eutrophication is caused by excess nutrients (nitrates and phosphates) triggering algal blooms; the blooms’ decay depletes oxygen in the water. Cholera is the classic water-borne disease (full disease table in EDS-04).
- Solid waste management covers collection, transport and disposal. The 3Rs of waste management are Reduce, Reuse, Recycle. Recycling means reusing waste material by reprocessing it into new products.
- Biodegradable waste can be decomposed by microorganisms (bacteria and fungi); plastic is non-biodegradable — it does not break down naturally by microorganisms. Composting is a method of recycling organic waste into nutrient-rich compost. The major component of municipal solid waste is organic waste.
- E-waste mainly contains toxic metals — lead, mercury and cadmium. Hazardous waste includes medical waste; biomedical waste is generated from hospitals and other healthcare facilities. The process of converting waste into energy is called waste-to-energy. The main objective of waste management is safe disposal without harming health or the environment.
- An environmental impact assessment (EIA) is conducted before project approval, to predict a project’s effects — never after the damage is done.
- Noise pollution is measured in decibels (unit taught in EDS-06). The main source of urban air pollution is vehicular emissions. Acid rain damages all of these — aquatic life, forests and buildings alike (Section 6 for its chemistry).
15A.4 Sustainable use of resources
- Sustainable use of water means careful, long-term use that preserves supplies for the future; sustainable water management includes conservation and reuse. Water scarcity refers to insufficient freshwater to meet demand. The main cause of groundwater depletion is over-extraction, mainly for irrigation.
- Rainwater harvesting collects and stores rainwater, aiding water conservation. Drip irrigation delivers water directly to plant roots and saves water compared with flooding fields.
- Afforestation means planting trees on land that was not previously forested. Deforestation leads to soil erosion: it removes the vegetation that holds soil in place. Desertification is land degradation in dry areas — the mock keys overgrazing as its main driver (stripped vegetation exposes soil); in full, deforestation, over-cultivation and climate variation drive it too.
- Sustainable agriculture focuses on soil conservation and long-term soil health. Sustainable development meets both present and future needs — the Brundtland definition (below). Renewable energy (wind, in the mock’s options) against coal, oil and gas: coal is a fossil fuel; biogas is produced from animal waste (and other organic matter) by anaerobic decomposition — the Section 15 biogas pair, methane + CO₂, is the composition to answer.
15A.5 The conventions Section 8 does not yet carry — and the Pakistan rows
| Convention / concept | Year | The exam fact |
|---|
| Vienna Convention | 1985 | The framework convention for ozone protection — the umbrella under which the Montreal Protocol (Section 7/Section 8) sits. Do not confuse it with the Vienna Convention on the Law of Treaties, which the banks ask as the ‘Treaty of Treaties’. |
| Ramsar Convention | 1971 | The treaty for the conservation and wise use of wetlands. Pakistan’s Indus Delta Ramsar site covers 472,800 hectares, designated 5 November 2002 (Ramsar Sites Information Service, site 1284). |
| Convention on Biological Diversity (CBD) | Adopted Rio 1992 | The Rio convention for biodiversity conservation and sustainable use; its meetings (COP) sit under the same Rio umbrella as the UNFCCC. |
| Brundtland Report — Our Common Future | 1987 | Popularised and defined sustainable development (present + future needs). The Brundtland Commission is the body the papers name for the definition. |
| COP | — | Conference of the Parties — the decision-making body of the UNFCCC; COP meetings are held under the UNFCCC (Section 8). |
| Clean Development Mechanism (CDM) | Under Kyoto | Operates under the Kyoto Protocol (Section 8): developed countries fund emission-reduction projects in developing countries and earn credits. Carbon credits are tradable permits tied to emission reductions; carbon trading aims to control emissions by capping totals and allowing permit trading. |
| Pakistan and the UNFCCC | Signed June 1992, ratified 1994 | Pakistan signed at Rio in June 1992 and ratified in 1994 — the two years are the trap pair: 1992 is the signature year, 1994 the ratification year, not the other way round (the mock’s own keyFlag corrects a booklet key of 1994 for the signature question). The UNFCCC itself entered into force 21 March 1994 (Section 8). |
| UNCCD — United Nations Convention to Combat Desertification | Adopted 17 June 1994 (Paris), in force 26 December 1996 | The desertification convention (PMS Screening 2026 Tough GK Mock, Q29; mock-only bank row, no mark claimed) — the third Rio convention, alongside the UNFCCC and the CBD: the only legally binding framework for combating desertification and mitigating drought, through sustainable land management. |
- Pakistan and climate vulnerability (PMS Screening 2026 Tough GK Mock, Q21; mock-only bank row, no mark claimed): Pakistan is conventionally counted among the world’s 10 most climate-vulnerable countries (Germanwatch Climate Risk Index long-term rankings) — the exact rank varies by edition and index, so learn the top-10 placement, not a single rank number.
16. Practice this topic
- Practice set: 73 verified past-paper questions in the PPSC + FPSC banks are tagged to this topic’s sub-topics (solar energy 6; renewable & other energy sources 21; climate & treaties 28; pollution 18) — the site serves them as this chapter’s practice set, with the IBES Everyday Science capsule questions behind them. Section 15’s expansion is backed additionally by the full-set counts in its intro (script
hidden_files/goldmine-notes-count-eds-exp.py over 591 files / 56,776 questions); those stems are the expansion’s evidence base, not a replacement for the 73. Note for the build: the practice set is filtered by the topic’s subject+topic tags at serve time, so solar-system and eclipse questions (Chapter 1), cellular-respiration and athlete-energy questions (biology), and instrument questions about the seismograph are excluded from this set by design, even though they contain the same words; the Kyoto enforcement question serves the standard 2005 date, with the single May-2006-keyed paper flagged in Section 12; the cheapest-source question serves both keyed framings (Hydel and Solar) with the split flagged in Section 12.
- Companion practice (retrospective, not counted in bankCount): the gk360 monthly CA bank’s 2025 climate rows behind Section 8A (February Q4 Freetown + Q33 $348bn; March Q4 Prakriti; April Q4 Loss & Damage board; August Q87 NEV Policy + Q161 Falepili; November Q15 Climate Risk Index + Q154 MOP37; December Q88 WMO Update + Q137 ozone hole — 10 rows, script
hidden_files/goldmine-notes-count-eds09-2025climate.py over 17 CA files / 2,012 questions) — the site serves them alongside the 73 topic questions; bankCount stays 73.
- Companion practice (retrospective, not counted in bankCount): the gk360 monthly CA bank’s 2025 energy rows behind Section 8B (January Q3 CAES; June Q79 Russia–Iran reactors; August Q63 White Oil Pipeline; September Q22 Pakistan–China solar; October Q67 Gobi dual-tower + Q18 Japan–US framework; November Q54 + Q93 ADB transmission [one event, two rows] + Q190 Punatsangchhu-II + Q63 Azerbaijan energy thread — 10 rows / 9 events, script
hidden_files/goldmine-notes-count-eds09-2025energy.py over 17 CA files / 2,012 questions) — the site serves them alongside the 73 topic questions; bankCount stays 73.
- Companion practice (mock, not counted in bankCount): the PMS Screening 2026 Environmental Science subject mock (100 items, files/pms-papers/pms-2026-gk-environmental-science-mock-test.json) behind Section 15A — the site serves it alongside the 73 topic questions; bankCount stays 73. Its Indus Delta ‘largest Ramsar site’ key is corrected in Section 12, not served as keyed.
- Book mode: ← Previous: Inventions, Discoveries & Instruments (Everyday Science) · Next: World at a Glance (General Knowledge) →
Goldmine Notes · Everyday Science · Chapter 9 · Sources: verified PPSC/FPSC past-paper banks (73 topic questions, script-counted, hidden_files/goldmine-notes-count-eds09.py); IBES Everyday Science capsule bank (solar-cell silicon, solar→electrical conversion, acid rain sulphuric + nitric acids, fossil-fuel NOT solar, biomass definition, greenhouse gas → global warming, CO₂ main warming gas, ozone absorbs UV); treaty dates and acid-rain chemistry verified against standard references via web check (Montreal agreed 16 Sep 1987 / in force 1 Jan 1989; Kyoto adopted 11 Dec 1997 / in force 16 Feb 2005; Paris adopted 12 Dec 2015 / in force 4 Nov 2016, well below 2 °C pursuing 1.5 °C; normal rain pH 5.6, acid rain below 5.6). Section 15 expansion (added 2026-10-31): full-bank counts via hidden_files/goldmine-notes-count-eds-exp.py (591 files / 56,776 questions; coal 10 stems / 6 files, petroleum 7 genuine stems / 5 files after excluding 2 current-affairs duplicates, natural gas 15 stems / 18 files, nuclear 22 stems / 23 files, wind/hydel/geothermal/biomass 43 stems / 20 files); coal rank order verified against a standard reference web check (peat < lignite < bituminous < anthracite in carbon and heat content); reactor machinery cross-linked to Chapter 6 Section 9, not duplicated; CNG/LNG full forms cross-linked to GK-07. 2025 retrospective (Section 8A, added 2026-11-01): gk360 monthly CA bank (17 files / 2,012 questions; script hidden_files/goldmine-notes-count-eds09-2025climate.py — 10 tight rows cited, 5 rows excluded and stated) + standard-reference checks 2026-11-01 (Freetown City Council / Sierra Leone government for the 6 Feb 2025 summit and Heat Action Plan; World Bank Country Climate and Development Report for the $348bn 2023–2030 figure, $152bn + $196bn; Bureau of Energy Efficiency / Power Ministry reporting for Prakriti 2025, 24–25 Feb, New Delhi; Reuters 7 Mar 2025 for the 4 Mar Loss & Damage board withdrawal letter; Dawn 27 Aug 2025 for the NEV Policy 2025–30 launch, 26 Aug; Australian Home Affairs / AFP July 2025 for the Falepili ballot, 16 Jun – 18 Jul 2025, 280/yr, 8,750 registrations; IISD Earth Negotiations Bulletin for MOP37, Nairobi, 3–7 Nov 2025, 619 participants, 20 decisions; Germanwatch Climate Risk Index 2026 via Dawn 13 Nov 2025 for Pakistan 15th long-term (1995–2024) and 47th single-year 2024; WMO State of the Climate Update for COP30 and Greenhouse Gas Bulletin 16 Oct 2025 for 1.42 °C, 423.9 ppm and the 3.5 ppm rise; NASA/NOAA 24 Nov 2025 for the 2025 ozone hole, 5th smallest since 1992). COP30 host cross-linked to GK-11 Section 9A, not duplicated. 2025 retrospective (Section 8B, added 2026-11-01): gk360 monthly CA bank (17 files / 2,012 questions; script hidden_files/goldmine-notes-count-eds09-2025energy.py — 10 tight rows / 9 events cited, held rows stated) + standard-reference checks 2026-11-01 (People’s Daily / ess-news 9–10 Jan 2025 for Yingcheng Nengchu-1, 300 MW / 1,500 MWh; Nuclear Engineering International 17 Oct 2025 + Rosatom reporting for the Russia–Iran eight-unit framework, 4 Bushehr + 4 Hormozgan, and the 24 Sep 2025 SMR MoU; Dawn 2 Sep 2025 for the White Oil Pipeline ECC approval, 477 km / US$300m / SOCAR + PSO + FWO, with the later ~US$431m tariff-petition figure flagged; JinkoSolar / SolarQuarter 10–11 Sep 2025 for the 2.3 GW Beijing B2B summit MoUs; CGTN 1 Oct 2025 + Azernews 10 Oct 2025 for the Guazhou dual-tower plant, two 200 m towers, ~27,000 mirrors, ~570 °C, ~25% gain; Reuters 28 Oct 2025 for the Japan–US Akasaka Palace framework, AP1000 + SMRs; Arab News / PMO 25–26 Nov 2025 for the Pakistan–Azerbaijan SOCAR upstream invitation, White Oil Pipeline interest, Joint Investment Company and Roadmap 2025–2028; MEA / ANI 11 Nov 2025 for Punatsangchhu-II, 1,020 MW, run-of-the-river, Wangdue Phodrang, final unit 27 Aug 2025; ADB / AFP 20 Nov 2025 for the US$330m Second Power Transmission Strengthening Project, US$285m + US$45m, 500 kV ~290 km, 3,200 MW). Siberia 2, Iran–IAEA Cairo and Türkiye–US nuclear cross-linked to GK-11 Section 9C, US–Pakistan oil-reserves deal to GK-10 Section 8A, Motuo dam to EDS-08 Section 7A, NEV Policy to Section 8A — none duplicated. Standard answers only; bank splits and loose bank wordings flagged in Section 12, not in the core notes. Section 15A (added 2026-11-03): PMS Screening 2026 Environmental Science subject mock (100 items, files/pms-papers/pms-2026-gk-environmental-science-mock-test.json) chapter-checked item by item; bank evidence script hidden_files/goldmine-notes-count-eds09-envmock.py over 608 files / 58,098 questions (ecosystem 21 rows / 20 files, biodiversity 8 / 6, waste families 1, EIA / pyramid of energy / microplastics / Brundtland / CBD zero direct rows; no 🔁/⭐/🆕 claimed); standard-reference checks 2026-11-03 (Ramsar Sites Information Service for Indus Delta 472,800 ha / 5 Nov 2002 and Rann of Kutch 566,375 ha, correcting the mock’s ‘largest Ramsar site’ key in Section 12; published standard source for Pakistan UNFCCC signed June 1992 / ratified 1994; mock keyFlag for nitrous oxide ~273× CO₂ over 100 years; Grand Mock 13 CFC-GWP trap added 2026-11-03, no marks claimed).
