CSS · Federal Public Service Commission · 2026
Solved CSS MPT Everyday Science practice set from the 1000 Advanced Booklet, Q701–750 — 38 new MCQs with verified answers and explanations (SI units, gases and chemistry, vitamins, the human body, planets). A practice compilation, not a past paper.
Paper Snapshot
Questions
38
Time
38
Minutes
Subjects
1
Topics
8
Read mode shows correct answers. Attempt mode hides answers, starts timer, and shows your result after submission.
About this paper
Part 15 (Q701–750) of the Sir Adnan '1000 Advanced Booklet Everyday Science' one-liner compilation (monster-data 'CSS MPT PAST PAPERS' pack). 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 38 of 50 printed items are published. 12 restate facts already published in earlier parts of the same booklet and are cross-linked, not re-extracted: Q707 red colour of blood (Q212 in Q201-250, pigment in red blood cells is haemoglobin); Q708 vitamin preventing night blindness (Q226 in Q201-250 / Q296 in Q251-300, vitamin A deficiency / night blindness); Q713 fastest growing tissue (Q278 in Q251-300, hair); Q714 blood cells fighting infections (Q282 in Q251-300, white blood cells); Q720 vitamin helping calcium absorption (Q693 in Q651-700, vitamin D); Q721 liquid part of blood (Q211 in Q201-250, fluid part of blood is plasma); Q729 disease from vitamin B1 deficiency (Q227 in Q201-250, beriberi); Q733 blood group receiving from all groups (Q218 in Q201-250, AB Positive universal recipient); Q736 planet with the longest day (Q691 in Q651-700, Venus's day longer than its year — the same 243-day rotation); Q738 metal used in galvanization (Q112 in Q101-150, zinc); Q741 planet known as morning and evening star (Q634 in Q601-650, Venus as morning star — the same Venus epithet); Q742 normal heartbeat rate (Q223 in Q201-250, 72 beats per minute). No printed item in this stretch is dropped as unanswerable and no booklet answer is corrected.
Paper Controls
Subject 1
Topic Section
15 solved MCQs shown directly below
Correct Answer: Ammonia
Ammonia is the gas commonly used in fertilizers: it is the feedstock from which urea and ammonium fertilizers are made, supplying nitrogen to plants.
Correct Answer: Sublimation
Sublimation is the conversion of a solid directly into a gas, skipping the liquid stage — dry ice and camphor are the textbook examples.
Correct Answer: O₃
The chemical formula of ozone is O₃: ozone is a molecule of three oxygen atoms, unlike ordinary oxygen gas, O₂.
Correct Answer: Argon
Argon is the gas filled in electric bulbs: this inert gas fills incandescent bulbs so the tungsten filament does not burn away in oxygen.
Correct Answer: Chloropicrin
Chloropicrin is known as tear gas: it is a lachrymator that irritates the eyes and was used as a chemical-warfare agent.
Correct Answer: Sodium Hydroxide
Sodium hydroxide is used in the preparation of soaps: it reacts with fats and oils in saponification to form soap and glycerol.
Correct Answer: Acetylene
Acetylene is the gas used in welding: burning it with oxygen gives an oxy-acetylene flame hot enough (about 3,100°C) to cut and weld metal.
Correct Answer: Acetic Acid
The chemical name of vinegar is acetic acid: household vinegar is a dilute (about 5%) solution of acetic acid in water.
Correct Answer: Mercury Vapor
Mercury vapor is the gas used in fluorescent tubes: an electric current through the vapour produces ultraviolet light, which the tube's phosphor coating turns into visible light.
Correct Answer: Ethylene
Ethylene is the gas used for ripening fruits: it is the plant hormone that triggers ripening, and it is applied commercially to ripen fruit after harvest.
Correct Answer: Sodium Bicarbonate
The chemical name of baking soda is sodium bicarbonate (NaHCO₃): it releases carbon dioxide when heated or mixed with an acid, which is why it raises baked goods.
Correct Answer: Helium
Helium is the gas used for breathing by deep-sea divers: mixed with oxygen (heliox), it replaces nitrogen and avoids nitrogen narcosis at depth.
Correct Answer: Uranium
Uranium is the element used in nuclear reactors as fuel: its fissile isotope uranium-235 splits in a chain reaction, releasing the heat that generates power.
Correct Answer: Liquid Hydrogen
Liquid hydrogen is the gas used in cryogenic engines: stored at about −253°C, it burns with liquid oxygen to give the high thrust of upper-stage rocket engines.
Correct Answer: CaSO₄·2H₂O
The chemical formula of gypsum is CaSO₄·2H₂O: hydrated calcium sulfate, the mineral from which plaster of Paris is made by heating.
Topic Section
6 solved MCQs shown directly below
Correct Answer: Ohm
The unit of electric resistance is the ohm: a conductor has a resistance of one ohm when one volt drives one ampere through it.
Correct Answer: Joule
The SI unit of work is the joule: one joule is the work done when a force of one newton moves an object one metre.
Correct Answer: Watt
The SI unit of power is the watt: one watt is one joule of energy transferred per second.
Correct Answer: Candela
The SI unit of luminous intensity is the candela: it measures how much light a source emits in a particular direction.
Correct Answer: Hertz
The SI unit of frequency is the hertz: one hertz is one cycle per second.
Correct Answer: Solids
The speed of sound is maximum in solids: sound travels fastest where particles are packed tightest, so it is faster in solids than in liquids and slowest in gases (and cannot travel in a vacuum).
Topic Section
3 solved MCQs shown directly below
Correct Answer: Ornithology
The study of birds is called ornithology: it covers birds' behaviour, classification, migration and ecology.
Correct Answer: Photosynthesis
Photosynthesis is the process by which plants make food: using sunlight, water and carbon dioxide, they produce glucose and release oxygen.
Correct Answer: Mycology
The study of fungi is called mycology: it covers mushrooms, moulds, yeasts and other fungi.
Topic Section
2 solved MCQs shown directly below
Correct Answer: Sphygmomanometer
A sphygmomanometer measures blood pressure: its cuff is inflated around the arm and the pressure is read as the cuff is released.
Correct Answer: Seismograph
A seismograph is the instrument used to measure earthquakes: it records the ground vibrations of seismic waves, whose magnitude is then expressed on the Richter scale.
Topic Section
3 solved MCQs shown directly below
Correct Answer: Mercury
Mercury is the smallest planet in the solar system: it is only slightly larger than the Moon, with a diameter of about 4,879 km.
Correct Answer: Badr-A
Badr-A was the first Pakistani satellite: launched on 16 July 1990, it was built by SUPARCO and operated for about five weeks.
Correct Answer: Venus
Venus is known as Earth's twin: it is close to Earth in size, mass and density, though its surface is a hostile 465°C under thick carbon-dioxide clouds.
Topic Section
2 solved MCQs shown directly below
Correct Answer: Crust
The crust is the outermost layer of the Earth: the thin solid shell on which we live, about 5-70 km thick.
Correct Answer: Sahara Desert
The Sahara Desert is the largest desert in the world by the conventional hot-desert answer: about 9.2 million square kilometres across North Africa.
Topic Section
5 solved MCQs shown directly below
Correct Answer: Iodine
Iodine is the element needed for the thyroid gland: the thyroid uses iodine to make thyroxine, the hormone that regulates metabolism.
Correct Answer: Hypothalamus
The hypothalamus controls body temperature: this part of the brain acts as the body's thermostat, triggering sweating or shivering to hold the temperature near 37°C.
Correct Answer: 120/80 mmHg
The normal blood pressure of humans is 120/80 mmHg: 120 is the systolic pressure (heart contracting) and 80 the diastolic pressure (heart resting).
Correct Answer: Skull
The skull protects the human brain: the bony cranium encloses the brain, with the meninges and cerebrospinal fluid cushioning it inside.
Correct Answer: Liver
The liver produces urea: in the urea cycle it converts toxic ammonia from protein breakdown into urea, which the kidneys then excrete in urine.
Topic Section
2 solved MCQs shown directly below
Correct Answer: Vitamin D
Vitamin D is known as calciferol: calciferol is the generic name for the vitamin D group (D₂ ergocalciferol and D₃ cholecalciferol).
Correct Answer: Vitamin A
Vitamin A is stored in the liver: as a fat-soluble vitamin it is stockpiled in the liver (and in body fat), unlike water-soluble vitamins, which are not stored in quantity.
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 stretch of the booklet largely restates its own earlier parts: 12 of the 50 items repeat facts already published in Q1–700 of the same booklet (haemoglobin and blood colour, vitamin A and night blindness, hair as fastest-growing tissue, white blood cells fighting infections, vitamin D and calcium absorption, plasma, beriberi, the AB Positive universal recipient, Venus's long day, zinc galvanization, Venus as morning star, and the 72 heartbeat). Those facts are cross-linked to their earlier publication, not re-extracted.
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.
Both, in different roles: mercury vapour produces the ultraviolet light inside the tube, and argon is the inert fill gas. The booklet's Q697 (argon in fluorescent lamps) and Q725 (mercury vapour in fluorescent tubes) describe those two roles, not a contradiction.
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