GSA Practice Set 25 – General Science & Ability (20 Original MCQs Explained)

ByArsalan Khan

This is GSA Practice Set 25 — 20 original MCQs in the GSA pattern: General Science (Q1–Q10), Mathematics (Q11–Q15), and General Ability / Everyday Science (Q16–Q20). Attempt all 20 in 25 minutes without looking at the answers, then check the explained answers and review your weak section. These are original practice questions, not copied from FPSC papers or competitor question banks, and this site is not affiliated with FPSC. Scoring: 18–20 = strong. 15–17 = good. 12–14 = fair, revise the sections you missed. Below 12 = study the weak-section review, then re-attempt in 2 days.

Section A — General Science (Q1–Q10)

Q1. Which planet is known as the Red Planet? A) Venus B) Mars C) Jupiter D) Saturn

Q2. What is the chemical symbol for carbon? A) Ca B) C C) Co D) Cr

Q3. What is the SI unit of temperature? A) Celsius B) Fahrenheit C) Kelvin D) Joule

Q4. Which organ is responsible for breathing? A) Heart B) Liver C) Lungs D) Kidney

Q5. What is the freezing point of water? A) 0°C B) 10°C C) 50°C D) 100°C

Q6. Which gas do humans inhale? A) Carbon dioxide B) Nitrogen C) Oxygen D) Hydrogen

Q7. What is the largest organ in the human body? A) Heart B) Liver C) Skin D) Lung

Q8. Which animal is the largest land animal? A) Hippopotamus B) African elephant C) Giraffe D) Rhinoceros

Q9. What is the chemical formula for carbon dioxide? A) CO B) CO2 C) O2 D) C2O

Q10. Which vitamin is good for blood clotting? A) Vitamin A B) Vitamin C C) Vitamin D D) Vitamin K

Section B — Mathematics (Q11–Q15)

Q11. What is 40% of 150? A) 40 B) 50 C) 60 D) 70

Q12. Next number in the series: 3, 6, 12, 24, ? A) 36 B) 40 C) 48 D) 52

Q13. If e + 8 = 22, what is e? A) 12 B) 13 C) 14 D) 15

Q14. What is the cube of 4? A) 48 B) 56 C) 64 D) 72

Q15. What is 18 × 9? A) 152 B) 162 C) 172 D) 182

Section C — General Ability / Everyday Science (Q16–Q20)

Q16. What is the capital of Canada? A) Toronto B) Ottawa C) Vancouver D) Montreal

Q17. Which is the smallest continent in the world? A) Europe B) Australia C) Antarctica D) Africa

Q18. What is the normal body temperature? A) 97.6°F B) 98.6°F C) 99.6°F D) 100.6°F

Q19. What is the hardest metal? A) Iron B) Steel C) Tungsten D) Aluminium

Q20. If a square has side 8, what is its perimeter? A) 24 B) 28 C) 32 D) 36

Answer Key + Explained Answers

Q1 – B) Mars. Mars is known as the Red Planet. Venus is Morning Star, Jupiter is largest, Saturn has rings.

Q2 – B) C. C is the chemical symbol for carbon. Ca is calcium, Co is cobalt, Cr is chromium.

Q3 – C) Kelvin. Kelvin is the SI unit of temperature. Celsius is scale, Fahrenheit is scale, joule is energy.

Q4 – C) Lungs. The lungs are responsible for breathing. Heart pumps blood, liver filters toxins, kidney filters blood.

Q5 – A) 0°C. The freezing point of water is 0°C. 10, 50, 100 are wrong.

Q6 – C) Oxygen. Humans inhale oxygen. Carbon dioxide is exhaled, nitrogen is inert, hydrogen is trace.

Q7 – C) Skin. Skin is the largest organ. Heart is organ, liver is organ, lung is organ — but skin is largest.

Q8 – B) African elephant. African elephant is the largest land animal. Hippopotamus is large, giraffe is tallest, rhinoceros is large — but elephant is largest.

Q9 – B) CO2. CO2 is the chemical formula for carbon dioxide (1 carbon, 2 oxygen). CO is carbon monoxide, O2 is oxygen, C2O is wrong.

Q10 – D) Vitamin K. Vitamin K is good for blood clotting. Vitamin A is for eyesight, vitamin C is for immunity, vitamin D is for bones.

Q11 – C) 60. 40% of 150 = 0.40 × 150 = 60.

Q12 – C) 48. Each term doubles: 3 × 2 = 6, 6 × 2 = 12, 12 × 2 = 24, 24 × 2 = 48. (36, 40, 52 are not ×2.)

Q13 – C) 14. e + 8 = 22, so e = 22 – 8 = 14.

Q14 – C) 64. Cube of 4 = 4 × 4 × 4 = 64. (48 is wrong, 56 is wrong, 72 is wrong.)

Q15 – B) 162. 18 × 9 = 162. (152 is wrong, 172 is wrong, 182 is wrong.)

Q16 – B) Ottawa. Ottawa is the capital of Canada. Toronto is largest city, Vancouver is city, Montreal is city.

Q17 – B) Australia. Australia is the smallest continent. Europe is second-smallest, Antarctica is fifth, Africa is second-largest.

Q18 – B) 98.6°F. Normal body temperature is 98.6°F. 97.6, 99.6, 100.6 are wrong.

Q19 – C) Tungsten. Tungsten is the hardest metal. Iron is hard, steel is hard, aluminium is soft — but tungsten is hardest.

Q20 – C) 32. Perimeter of square = 4 × side = 4 × 8 = 32. (24 is wrong, 28 is wrong, 36 is wrong.)

Weak-Section Review

Which section did you score lowest in? Write the 3 questions you missed, the correct answers, and one line for each explaining why. General Science: revise Mars (Red Planet), C (carbon), Kelvin (temperature), lungs (breathing), 0°C (freezing point), oxygen (inhaled), skin (largest organ), African elephant (largest land animal), CO2 (carbon dioxide), vitamin K (blood clotting). Mathematics: practise percentages, ×2 series, algebra, cubes, multiplication. General Ability / Everyday Science: revise Ottawa (Canada), Australia (smallest continent), 98.6°F (body temperature), tungsten (hardest metal), square perimeter (4 × side). Re-attempt this set in 2 days.

These are original practice questions written for csspastpapers.pk. They are not FPSC official questions, and this site is not affiliated with FPSC.

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