CSS · Federal Public Service Commission · 2025
Solved CSS MPT 2025 Everyday Science section — 47 MCQs with verified answers and explanations (light-year, photosynthesis, ozone layer, haemoglobin, Saturn's moons, Wi-Fi 7, blood clotting). A booklet recall list for the EDS section, not the full 2025 paper.
Paper Snapshot
Questions
47
Time
47
Minutes
Subjects
1
Topics
29
Read mode shows correct answers. Attempt mode hides answers, starts timer, and shows your result after submission.
About this paper
A 47-item Everyday Science one-liner list from the Sir Adnan booklet headed 'CSS MPT 2025- EVERYDAY SCIENCE' (monster-data 'CSS MPT PAST PAPERS' pack). The booklet prints Q1–2 and Q6–50 (Q3–5 are absent); all 47 printed items are published here in the standard MCQ format with verified answers and explanations, the source printing answers only, so the 3 distractors per item are authored under Anas's 2026-10-28 single-format decision and optionsSource is recorded as 'authored'. Two printed answers were corrected to the standard answer and flagged in keyFlag: printed Q12 (fastest Wi-Fi standard — the booklet's 802.11n is a 2009 standard, superseded by Wi-Fi 7 / 802.11be) and printed Q36 (planet with the most moons — Saturn, with 274 confirmed moons in March 2025, not Jupiter). This is the Everyday Science section's recall list only, NOT the full official 2025 paper, and is labelled as such in the title, slug and paperType.
Paper Controls
Subject 1
Topic Section
1 solved MCQs shown directly below
Correct Answer: Distance travelled by light in one year
A light-year is a unit of distance: the distance light travels in one year in a vacuum, about 9.46 trillion kilometres.
Topic Section
2 solved MCQs shown directly below
Correct Answer: Due to scattering of sunlight by the atmosphere
Short blue wavelengths of sunlight are scattered by air molecules far more than other colours (Rayleigh scattering), so the sky looks blue.
Correct Answer: 3 x 10^8 m/s
Light travels in a vacuum at approximately 3 x 10^8 metres per second (exactly 299,792,458 m/s).
Topic Section
1 solved MCQs shown directly below
Correct Answer: Heating and chemical reduction
Smelting heats the ore, usually with a reducing agent, so the metal is chemically reduced and separated from its ore.
Topic Section
3 solved MCQs shown directly below
Correct Answer: Troposphere
Most weather and cloud formation happens in the troposphere, the lowest layer of the atmosphere.
Correct Answer: Nitrogen
Nitrogen makes up about 78% of Earth's atmosphere, far more than oxygen (about 21%).
Correct Answer: Ozone layer
The ozone layer, in the stratosphere, absorbs most of the Sun's harmful ultraviolet radiation.
Topic Section
1 solved MCQs shown directly below
Correct Answer: Metallic bonds
Metals are held together by metallic bonding — a lattice of positive ions in a sea of delocalised electrons — which gives them their strength and hardness.
Topic Section
1 solved MCQs shown directly below
Correct Answer: Land, water and atmosphere
The biosphere is the zone of Earth — land, water and air — where living organisms exist.
Topic Section
1 solved MCQs shown directly below
Correct Answer: Infectious diseases
Malaria, polio, dengue and influenza are all caused by infectious agents and can spread between hosts.
Topic Section
2 solved MCQs shown directly below
Correct Answer: DHCP
DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses and network settings to devices on a network.
Correct Answer: Wi-Fi 7 (802.11be)
Wi-Fi 7, standard 802.11be, is the fastest current Wi-Fi standard, with a theoretical peak around 46 Gbps — well above the older standards listed.
Topic Section
2 solved MCQs shown directly below
Correct Answer: Size
An earthquake's magnitude is a measure of its size, based on the energy released at the source.
Correct Answer: Seismology
Seismology is the scientific study of earthquakes and the seismic waves they produce.
Topic Section
2 solved MCQs shown directly below
Correct Answer: Ohm
Electrical resistance is measured in ohms (symbol Ω); one ohm is the resistance that allows one ampere to flow under one volt.
Correct Answer: Tungsten
Tungsten is used for bulb filaments because it has a very high melting point and glows without melting quickly.
Topic Section
5 solved MCQs shown directly below
Correct Answer: Mars
Mars is called the Red Planet because iron oxide (rust) on its surface gives it a reddish appearance.
Correct Answer: Mercury
Mercury orbits closest to the Sun, at an average distance of about 58 million kilometres.
Correct Answer: Jupiter
Jupiter is the largest planet in the solar system, with more than twice the mass of all the other planets combined.
Correct Answer: Saturn
Saturn now holds the record: 274 confirmed moons were recognised by the International Astronomical Union in March 2025, ahead of Jupiter's 95.
Correct Answer: Jupiter
Jupiter rotates fastest of all the planets, completing one day in about 9 hours 55 minutes despite being the largest planet.
Topic Section
1 solved MCQs shown directly below
Correct Answer: Albert Einstein
Albert Einstein proposed the theory of relativity — special relativity in 1905 and general relativity in 1915.
Topic Section
2 solved MCQs shown directly below
Correct Answer: Condensation
Condensation is the change of water vapour (gas) into liquid water, as when dew forms or clouds develop.
Correct Answer: Evaporation
Evaporation is the change of a liquid into a gas (vapour), occurring at the surface at any temperature.
Topic Section
7 solved MCQs shown directly below
Correct Answer: Four chambers
The human heart has four chambers: two atria (upper) and two ventricles (lower).
Correct Answer: Liver
The liver is the largest gland (and largest internal organ) in the human body; it produces bile and processes nutrients.
Correct Answer: Iron
Iron sits at the centre of the haem group in haemoglobin and binds oxygen for transport in the blood.
Correct Answer: 37°C
Normal human body temperature is about 37°C (98.6°F), though it varies slightly through the day.
Correct Answer: Oxygen
Humans breathe in oxygen, which cells use in respiration to release energy from food; carbon dioxide is breathed out.
Correct Answer: Kidney
The kidneys filter waste products from the blood and regulate water and salts, producing urine.
Correct Answer: Platelets
Platelets (thrombocytes) are the small cell fragments that clump together to form clots and stop bleeding.
Topic Section
2 solved MCQs shown directly below
Correct Answer: Barometer
A barometer measures atmospheric pressure; falling pressure often signals approaching bad weather.
Correct Answer: Thermometer
A thermometer measures temperature; common types use liquid expansion, resistance or infrared sensing.
Topic Section
1 solved MCQs shown directly below
Correct Answer: Methane
Natural gas is mainly methane (CH4), typically 70–90% of its composition.
Topic Section
1 solved MCQs shown directly below
Correct Answer: Photosynthesis
In photosynthesis, green plants use sunlight, water and carbon dioxide to make glucose, releasing oxygen as a by-product.
Topic Section
1 solved MCQs shown directly below
Correct Answer: Au
Gold's symbol Au comes from its Latin name, aurum.
Topic Section
1 solved MCQs shown directly below
Correct Answer: Cell
The cell is the smallest unit of life: all living things are made of one or more cells.
Topic Section
1 solved MCQs shown directly below
Correct Answer: Diamond
Diamond, a crystalline form of carbon, is the hardest naturally occurring substance (10 on the Mohs scale).
Topic Section
1 solved MCQs shown directly below
Correct Answer: Sun
Almost all energy on Earth — directly as sunlight and heat, and indirectly as wind, waves and fossil fuels — comes from the Sun.
Topic Section
1 solved MCQs shown directly below
Correct Answer: Genetics
Genetics is the study of heredity — how traits pass from parents to offspring — and of variation within populations.
Topic Section
1 solved MCQs shown directly below
Correct Answer: H2O
A water molecule has two hydrogen atoms and one oxygen atom: H2O.
Topic Section
1 solved MCQs shown directly below
Correct Answer: Carbon dioxide
Carbon dioxide extinguishers smother a fire by displacing oxygen; CO2 does not support combustion.
Topic Section
1 solved MCQs shown directly below
Correct Answer: Neil Armstrong
Neil Armstrong was the first person to step onto the Moon, on 20 July 1969 during Apollo 11.
Topic Section
1 solved MCQs shown directly below
Correct Answer: Silver iodide
Silver iodide is seeded into clouds for artificial rain (cloud seeding) because its crystal structure resembles ice and encourages droplet formation.
Topic Section
1 solved MCQs shown directly below
Correct Answer: It needs a medium
Sound is a vibration that must travel through a medium — a solid, liquid or gas. A vacuum has no medium, so sound cannot pass through it.
Topic Section
1 solved MCQs shown directly below
Correct Answer: 7
Pure water at 25°C is neutral, with a pH of 7 — equal concentrations of hydrogen and hydroxide ions.
Topic Section
1 solved MCQs shown directly below
Correct Answer: Vitamin K
Vitamin K is essential for producing the clotting factors that allow blood to clot; its name comes from the German 'Koagulationsvitamin'.
Source & verification
Built by GK360 from verified bank questions — every answer rechecked before publishing. Where the source printed no options, the answer options were prepared by GK360; the questions and correct answers are the verified originals.
Questions
No. This is the Everyday Science section's one-liner list from a Sir Adnan booklet headed 'CSS MPT 2025- EVERYDAY SCIENCE'. It is labelled as a recall list in the title, slug and paperType, and it must not be quoted as the full 2025 paper.
47 of the booklet's printed items are published. The booklet itself jumps from Q2 to Q6, so printed Q3–5 simply do not exist in this file; nothing was invented to fill the gap, and printedNo is retained so the numbering matches the booklet.
Yes, two, both flagged in keyFlag. The fastest Wi-Fi standard is now Wi-Fi 7 (802.11be), not the booklet's 802.11n from 2009; and the planet with the most moons is Saturn (274 confirmed moons, March 2025), not Jupiter. Every other printed answer was verified as the standard answer.
The source prints statement + answer only, with no (a)-(d) options. Under Anas's 2026-10-28 single-format decision, each item is published in the standard MCQ format with 3 authored plausible distractors; the questions and answers are the booklet's (subject to the two flagged corrections), and every answer was verified as the standard answer. optionsSource is recorded as 'authored' so authored options are never mistaken for the paper's.
Explore GK360
Use these important GK360 sections to prepare for PPSC, FPSC, one paper exams, subject-wise MCQs, solved past papers and current affairs.
