CSS · Federal Public Service Commission · 2026
Final solved CSS MPT Everyday Science practice set from the 1000 Advanced Booklet, Q901–1000 — 19 new MCQs with verified answers and explanations (nucleus and DNA, the telephone, ozone O3, gravity, the telescope, the larynx, Sputnik 1, mitosis, Neptune, Mauna Loa, dermatology). A practice compilation, not a past paper.
Paper Snapshot
Questions
19
Time
19
Minutes
Subjects
1
Topics
7
Read mode shows correct answers. Attempt mode hides answers, starts timer, and shows your result after submission.
About this paper
FINAL part (Q901–1000) of the Sir Adnan '1000 Advanced Booklet Everyday Science' one-liner compilation (monster-data 'CSS MPT PAST PAPERS' pack), completing the booklet: all 1,000 printed items are now accounted for across the 20 published parts. The booklet prints statement + answer only, so each item is published in the standard MCQ format with 3 authored plausible distractors under Anas's 2026-10-28 single-format decision and optionsSource recorded as 'authored'. Only 19 of 100 printed items are published. 81 restate facts already published in earlier parts of the same booklet (or the 2025 EDS section / 2026 mock) and are cross-linked, not re-extracted: Q901 hardest natural substance, diamond (Q103 in Q101-150 + Q803 in Q801-850); Q902 laughing gas, nitrous oxide (Q631 in Q601-650); Q903 most abundant gas in the atmosphere, nitrogen (Q899 in Q851-900 + 2025 EDS section Q14); Q904 vitamin D produced in the skin by sunlight (Q614 in Q601-650 + 2026 mock); Q905 photosynthesis as the food-making process (2025 EDS section Q23); Q906 organ purifying blood, kidney (Q288 in Q251-300 + 2025 EDS section Q42 + Q871 in Q851-900); Q907 red colour of blood, haemoglobin (Q212 in Q201-250); Q909 blood-pressure instrument, sphygmomanometer (Q711 in Q701-750); Q910 SI unit of force, newton (Q642 in Q601-650); Q912 Red Planet, Mars (2025 EDS section Q16 + 2026 mock + Q657 in Q651-700); Q913 largest gland, liver (Q245 in Q201-250 + Q895 in Q851-900); Q914 boiling point of water, 100°C (Q637 in Q601-650); Q915 fastest land animal, cheetah (Q664 in Q651-700); Q916 scurvy from vitamin C deficiency (Q229 in Q201-250); Q918 white blood cells fighting infection (Q282 in Q251-300); Q920 deep-sea divers' breathing mixture, oxygen-helium (Q740 note in Q701-750, heliox); Q921 branch of science dealing with earthquakes, seismology (Q644 in Q601-650 + Q964 in this part); Q922 metal liquid at room temperature, mercury (Q104 in Q101-150 + Q143 in Q101-150); Q923 relativity, Albert Einstein (2025 EDS section Q17); Q924 largest planet, Jupiter (2025 EDS section Q30 + 2026 mock + Q669 in Q651-700); Q925 vitamin K for blood clotting (Q225 in Q201-250); Q926 chemical symbol of gold, Au (Q688 in Q651-700); Q927 thermometer for temperature (Q647 in Q601-650); Q928 chemical energy stored in food (Q374 in Q351-400); Q929 nuclear fusion as the Sun's energy source (Q577 in Q551-600); Q930 solar cell converting solar energy to electricity (Q314 in Q301-350); Q931 smallest bone, stapes (Q203 in Q201-250 + Q275 in Q251-300); Q932 organ pumping blood, heart (2026 mock); Q933 helium for balloons (Q689 in Q651-700 + Q802 in Q801-850); Q934 speed of light in vacuum, 3 × 10⁸ m/s (2025 EDS section Q26 + 2026 mock + Q682 in Q651-700); Q936 SI unit of electric current, ampere (Q607 in Q601-650); Q937 sunshine vitamin, vitamin D (Q614 in Q601-650 + Q904 in this part); Q938 leaf as the photosynthesising part of the plant (Q626 in Q601-650); Q939 marsh gas, methane (Q368 in Q351-400); Q940 study of fossils, paleontology (Q21 in Q1-50 + Q302 in Q301-350); Q941 methane as the main constituent of natural gas (Q557 in Q551-600); Q942 iris controlling light entering the eye (Q291 in Q251-300); Q943 Earth revolving around the Sun in 365 days (Q678 note in Q651-700, 365.25 days precisely); Q944 hygrometer for humidity (Q677 in Q651-700 + MPT EDS one-liners Q12); Q945 fastest bird, peregrine falcon (Q639 in Q601-650); Q946 study of insects, entomology (Q684 in Q651-700); Q947 46 chromosomes in human cells (Q201-250); Q948 chemical formula of common salt, NaCl (Q821 in Q801-850); Q949 Freon in refrigerators (Q692 note in Q651-700, conventional answer, phased out under the Montreal Protocol); Q950 study of stars and planets, astronomy (Q633 in Q601-650); Q951 Earth tilted 23.5° on its axis (Q695 in Q651-700); Q954 SI unit of energy, joule (Q343 in Q301-350 + Q709 in Q701-750); Q955 penicillin discovered by Alexander Fleming (Q673 in Q651-700); Q956 study of heredity, genetics (2025 EDS section Q40 + MPT EDS one-liners Q13); Q957 stratosphere containing the ozone layer (Q699 in Q651-700); Q958 universal donor blood group, O negative (Q217 in Q201-250); Q959 solid directly into gas, sublimation (Q703 in Q701-750); Q960 largest desert, Sahara (Q748 note in Q701-750, largest hot desert); Q963 carbon dioxide necessary for photosynthesis (Q868 in Q851-900); Q964 study of earthquakes, seismology (Q644 in Q601-650 + Q921 in this part); Q965 Venus as Earth's twin (Q731 in Q701-750); Q966 chemical symbol of iron, Fe (Q844 in Q801-850); Q968 unit of frequency, hertz (Q739 in Q701-750); Q970 largest animal on Earth, blue whale (Q655 in Q651-700, heaviest mammal — the same blue-whale size record); Q971 vitamin C from citrus fruits (Q767 in Q751-800); Q972 outermost layer of the Earth, crust (MPT EDS one-liners Q15); Q974 study of fungi, mycology (Q744 in Q701-750); Q975 chemical symbol of silver, Ag (Q850 in Q801-850); Q976 pancreas producing insulin (Q248 in Q201-250); Q977 SI unit of power, watt (Q716 in Q701-750); Q978 ozone protecting Earth from UV rays (2025 EDS section Q28 + Q668 in Q651-700); Q980 most abundant element in the human body, oxygen (MPT EDS one-liners Q20); Q981 study of plants, botany (Q869 in Q851-900); Q982 branch of biology dealing with animals, zoology (Q672 in Q651-700); Q983 booklet prints Jupiter for most moons — NOT republished: the corrected standard answer, Saturn (274 confirmed moons, March 2025), is already published at Q683 in Q651-700; Q986 SI unit of electric charge, coulomb (Q751 in Q751-800); Q987 Uranus rotating on its side (Q778 in Q751-800); Q988 study of sound, acoustics (Q900 in Q851-900); Q989 unit of work, joule (Q709 in Q701-750 + Q954 in this part); Q990 light year as a unit of distance (2025 EDS section + Q601-650); Q991 pH of a neutral solution, 7 (2025 EDS section Q49, pH of pure water 7); Q993 chemical formula of water, H₂O (Q601-650); Q994 fastest rotating planet, Jupiter (Q618 in Q601-650); Q996 cerebellum controlling balance (Q259 in Q251-300 + Q632 in Q601-650); Q998 gall bladder storing bile (Q285 in Q251-300 + Q891 in Q851-900); Q1000 unit of sound intensity, decibel (Q866 in Q851-900). No printed item in this stretch is dropped as unanswerable.
Paper Controls
Subject 1
Topic Section
4 solved MCQs shown directly below
Correct Answer: Nucleus
The nucleus contains the cell's hereditary material (DNA): the DNA is organised into chromosomes inside the nucleus, which directs the cell's growth and reproduction, while mitochondria make energy and ribosomes make proteins.
Correct Answer: Mitosis
Mitosis is the process of cell division in body cells: one cell divides into two genetically identical daughter cells for growth and repair, while meiosis makes sex cells with half the chromosomes and fission and budding are asexual reproduction in simpler organisms.
Correct Answer: Fermentation
Fermentation converts sugar into alcohol: yeast breaks down sugars without oxygen, producing ethanol and carbon dioxide, the basis of brewing and baking (distillation only separates alcohol afterwards; photosynthesis and respiration run the opposite way).
Correct Answer: Dermatology
Dermatology is the study of human skin: it covers the skin, hair and nails and their diseases (cardiology covers the heart, neurology the nervous system, ophthalmology the eyes).
Topic Section
2 solved MCQs shown directly below
Correct Answer: Alexander Graham Bell
Alexander Graham Bell invented the telephone: he patented it in 1876 and made the first intelligible telephone call to his assistant Thomas Watson (Edison worked on the phonograph and light bulb, Marconi on radio, Tesla on alternating current).
Correct Answer: Evaporation, condensation, precipitation
The water cycle involves evaporation, condensation and precipitation: water evaporates from oceans and land, condenses into clouds, and falls back as rain or snow, completing the cycle.
Topic Section
2 solved MCQs shown directly below
Correct Answer: O₃
The chemical formula of ozone is O3: ozone is a molecule of three oxygen atoms, formed in the stratosphere where it absorbs harmful ultraviolet radiation (O2 is ordinary oxygen gas).
Correct Answer: Oxygen
Oxygen is needed for combustion: burning is a rapid reaction with oxygen, which is why fires go out when oxygen is cut off (nitrogen is inert in air, carbon dioxide is a product of burning, not a supporter of it).
Topic Section
4 solved MCQs shown directly below
Correct Answer: Isaac Newton
Isaac Newton discovered gravity: his law of universal gravitation (1687) explained why apples fall and planets orbit, while Einstein later reframed gravity as the curvature of spacetime and Galileo studied falling bodies.
Correct Answer: Telescope
A telescope is used to see distant objects in space: it gathers light from stars, planets and galaxies too faint or far for the naked eye (a microscope magnifies tiny nearby objects, a periscope looks around obstacles).
Correct Answer: Manometer
A manometer measures the pressure of gases: it compares a gas's pressure against a liquid column, while a barometer measures atmospheric pressure, an altimeter measures height, and a speedometer measures speed.
Correct Answer: Newton
Newton gave the three laws of motion: published in the Principia (1687), they describe inertia, force as mass times acceleration, and equal and opposite reactions (Einstein gave relativity, Galileo studied falling bodies, Archimedes worked on buoyancy).
Topic Section
2 solved MCQs shown directly below
Correct Answer: Larynx
The larynx helps in voice production: it houses the vocal cords, which vibrate as air passes over them to produce sound, while the pharynx is the throat passage and the trachea carries air to the lungs.
Correct Answer: Calcium
Calcium is essential for the formation of bones and teeth: about 99% of the body's calcium is stored in bones and teeth as calcium phosphate, giving them hardness and strength (iron carries oxygen in blood, sodium and potassium balance body fluids).
Topic Section
4 solved MCQs shown directly below
Correct Answer: Earth’s rotation
Day and night occur due to the Earth's rotation: as the Earth spins on its axis once every 24 hours, each side turns in and out of sunlight in turn (revolution around the Sun gives the year, and the axial tilt gives the seasons).
Correct Answer: Sputnik 1
Sputnik 1 was the first artificial satellite: launched by the Soviet Union on 4 October 1957, it orbited the Earth and opened the space age (Explorer 1 was the first US satellite, Vostok 1 carried the first human, Yuri Gagarin).
Correct Answer: Neptune
Neptune is the farthest planet from the Sun: it is the eighth and outermost planet of the solar system, orbiting at about 30 times the Earth's distance (Pluto is a dwarf planet, not a planet, since 2006).
Correct Answer: 8
There are 8 planets in the solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune (Pluto was reclassified as a dwarf planet by the International Astronomical Union in 2006, ending the 9-planet count).
Topic Section
1 solved MCQs shown directly below
Correct Answer: Mauna Loa (Hawaii)
Mauna Loa in Hawaii is the largest volcano on Earth: this shield volcano rises about 9 km from the ocean floor and covers roughly half the island of Hawaii (Etna and Fuji are smaller stratovolcanoes, Kilimanjaro is a dormant volcanic mountain).
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 a practice set built from the Sir Adnan '1000 Advanced Booklet Everyday Science' one-liner compilation. It is labelled practice in the title, slug and paperType and must not be quoted as an official past paper.
This final stretch of the booklet is mostly a recap of its own earlier parts: 81 of the 100 items repeat facts already published in Q1–900 of the same booklet, the 2025 EDS section or the 2026 mock (diamond, laughing gas, nitrogen, vitamin D from sunlight, photosynthesis, the kidneys, haemoglobin, the sphygmomanometer, the newton, Mars, the liver, boiling water, the cheetah, scurvy, white blood cells, heliox, seismology, mercury, Einstein, Jupiter, vitamin K, gold's symbol Au, the thermometer, chemical energy in food, nuclear fusion, solar cells, the stapes, the heart, helium balloons, the speed of light, the ampere, the sunshine vitamin, the leaf, marsh gas, paleontology, methane in natural gas, the iris, 365 days, the hygrometer, the peregrine falcon, entomology, 46 chromosomes, NaCl, Freon, astronomy, the 23.5-degree tilt, the joule, Fleming, genetics, the stratosphere, O negative, sublimation, the Sahara, carbon dioxide in photosynthesis, Venus as Earth's twin, iron's symbol Fe, the hertz, the blue whale, citrus vitamin C, the crust, mycology, silver's symbol Ag, insulin from the pancreas, the watt, ozone and UV, oxygen in the human body, botany, zoology, the coulomb, Uranus on its side, acoustics, the light year, pH 7, water H2O, Jupiter's rotation, the cerebellum, the gall bladder, and the decibel). Those facts are cross-linked to their earlier publication, not re-extracted. The booklet's Jupiter answer for most moons is not republished either: the corrected standard answer, Saturn, is already published at Q683 of the Q651–700 part.
The booklet prints a statement and its answer only, with no options. Each item is published in the standard 4-option MCQ format with 3 authored plausible distractors, under the 2026-10-28 single-format decision; the answers themselves are the booklet's verified standard answers.
The nucleus as the holder of hereditary DNA, Alexander Graham Bell and the telephone, ozone as O3, Isaac Newton and gravity, the telescope for distant space objects, the larynx in voice production, oxygen for combustion, day and night from the Earth's rotation, Sputnik 1, the manometer for gas pressure, mitosis, Neptune as the farthest planet, the 8-planet count, calcium for bones and teeth, the water cycle's evaporation–condensation–precipitation steps, Newton's three laws of motion, fermentation of sugar into alcohol, Mauna Loa as the largest volcano, and dermatology.
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