GSA Practice Set 18 – General Science & Ability (20 Original MCQs Explained)

This is GSA Practice Set 18 — 20 original MCQs: 10 General Science (Q1–Q10) and 10 General Ability (Q11–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 is the largest planet in our solar system? A) Saturn B) Jupiter C) Neptune D) Earth

Q2. Which gas do plants release during photosynthesis? A) Carbon dioxide B) Nitrogen C) Oxygen D) Hydrogen

Q3. Which is the hardest substance in the human body? A) Bone B) Tooth enamel C) Nail D) Hair

Q4. Which organ pumps blood around the human body? A) Liver B) Kidney C) Heart D) Lung

Q5. What is the chemical symbol for carbon? A) Ca B) C C) Co D) Cr

Q6. Which is the largest land animal in the world? A) Blue whale B) African elephant C) Giraffe D) Hippopotamus

Q7. What is the main function of the lungs? A) Pump blood B) Breathing C) Digest food D) Filter blood

Q8. Which animal is called “man’s best friend”? A) Cat B) Horse C) Dog D) Parrot

Q9. What is the main function of the roots in a plant? A) Make food B) Absorb water C) Support the plant D) Produce seeds

Q10. Which is the largest moon in our solar system? A) Moon B) Titan C) Ganymede D) Europa

Section B — General Ability (Q11–Q20)

Q11. If 5 pencils cost Rs 50, what is the cost of 1 pencil (same price)? A) Rs 5 B) Rs 10 C) Rs 15 D) Rs 20

Q12. Next number in the series: 2, 4, 8, 16, ? A) 24 B) 28 C) 32 D) 36

Q13. What is 25% of 200? A) 25 B) 40 C) 50 D) 75

Q14. If y – 3 = 5, what is y? A) 5 B) 6 C) 7 D) 8

Q15. What is the square of 15? A) 200 B) 215 C) 225 D) 250

Q16. What is the cube of 3? A) 9 B) 18 C) 27 D) 36

Q17. How many sides does a pentagon have? A) 4 B) 5 C) 6 D) 7

Q18. How many minutes are there in 1 hour? A) 30 B) 45 C) 60 D) 90

Q19. What is 120 + 80? A) 180 B) 190 C) 200 D) 210

Q20. What is 700 – 200? A) 400 B) 500 C) 600 D) 700

Answer Key + Explained Answers

Q1 – B) Jupiter. Jupiter is the largest planet. Saturn is second-largest, Neptune is fourth-largest, Earth is fifth-largest.

Q2 – C) Oxygen. Plants release oxygen during photosynthesis (and absorb CO2). CO2 is absorbed, nitrogen is inert, hydrogen is trace.

Q3 – B) Tooth enamel. Tooth enamel is the hardest substance in the human body. Bone is hard, nail is keratin, hair is keratin.

Q4 – C) Heart. Heart pumps blood. Liver detoxifies, kidney filters blood, lung breathes.

Q5 – B) C. Carbon is C. Ca is calcium, Co is cobalt, Cr is chromium.

Q6 – B) African elephant. African elephant is the largest land animal (up to 6,000 kg). Blue whale is largest animal overall (in the sea), giraffe is tallest, hippopotamus is smaller.

Q7 – B) Breathing. Lungs are for breathing (gas exchange). Heart pumps blood, stomach digests food, kidney filters blood.

Q8 – C) Dog. Dog is called “man’s best friend” (loyalty). Cat is a pet, horse is a pet, parrot is a pet.

Q9 – B) Absorb water. Roots absorb water (and minerals) from the soil. Leaves make food, stem supports the plant, fruits produce seeds.

Q10 – C) Ganymede. Ganymede (Jupiter’s moon) is the largest moon. Moon is Earth’s moon, Titan is Saturn’s moon (second-largest), Europa is Jupiter’s moon (smallest of the Galilean moons).

Q11 – B) Rs 10. One pencil = 50 divided by 5 = Rs 10.

Q12 – C) 32. Each term doubles: 2 × 2 = 4, 4 × 2 = 8, 8 × 2 = 16, 16 × 2 = 32. (24, 28, 36 are not ×2.)

Q13 – C) 50. 25% of 200 = 0.25 × 200 = 50.

Q14 – D) 8. y – 3 = 5, so y = 5 + 3 = 8.

Q15 – C) 225. 15 squared = 15 × 15 = 225. (200, 215, 250 are not squares of 15.)

Q16 – C) 27. 3 cubed = 3 × 3 × 3 = 27. (9 = 3 squared, 18 and 36 are not cubes of 3.)

Q17 – B) 5. A pentagon has 5 sides (penta = five). Quadrilateral has 4, hexagon has 6, heptagon has 7.

Q18 – C) 60. 1 hour = 60 minutes.

Q19 – C) 200. 120 + 80 = 200.

Q20 – B) 500. 700 – 200 = 500.

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 Jupiter (largest planet), oxygen (plants release), tooth enamel (hardest substance), heart (pumps blood), C (carbon), African elephant (largest land animal), lungs (breathing), dog (man’s best friend), roots (absorb water), Ganymede (largest moon). General Ability: practise unitary method, ×2 series, percentages, algebra, squares / cubes, shapes (pentagon 5), time (1 hour = 60 minutes), addition / subtraction. 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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