GSA Practice Set 33 – General Science & Ability (20 Original MCQs Explained)
Intro: This is GSA Practice Set 33 — 20 original MCQs in the General Science & Ability pattern. 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. What is the chemical symbol for silver? A) Si B) Ag C) Sr D) Sv
Q2. What is the chemical symbol for iron? A) Ir B) Fe C) In D) Io
Q3. What is the chemical symbol for oxygen? A) Ox B) Oy C) O D) Og
Q4. What is the chemical symbol for sodium? A) So B) Sd C) Na D) Sm
Q5. What is the chemical formula for water? A) CO2 B) H2O C) O2 D) NaCl
Q6. At standard atmospheric pressure, water freezes at: A) −10°C B) 0°C C) 10°C D) 50°C
Q7. At standard atmospheric pressure, water boils at: A) 50°C B) 90°C C) 100°C D) 120°C
Q8. Which organ pumps blood around the human body? A) Liver B) Lung C) Heart D) Kidney
Q9. Which organ is used for breathing? A) Heart B) Lung C) Stomach D) Skin
Q10. Which organ controls thought, memory and movement? A) Heart B) Liver C) Brain D) Kidney
Section B — Quantitative Ability (Q11–Q15):
Q11. What is 30% of 300? A) 60 B) 75 C) 90 D) 120
Q12. Next number in the series: 3, 6, 12, 24, ? A) 36 B) 42 C) 48 D) 54
Q13. If y + 12 = 50, what is y? A) 36 B) 37 C) 38 D) 39
Q14. What is 12 × 6? A) 62 B) 66 C) 72 D) 78
Q15. How many sides does a nonagon have? A) 7 B) 8 C) 9 D) 10
Section C — General Knowledge (Q16–Q20):
Q16. What is the capital of France? A) Berlin B) Madrid C) Paris D) Rome
Q17. What is the capital of Japan? A) Seoul B) Beijing C) Bangkok D) Tokyo
Q18. Which planet is known as the Red Planet? A) Venus B) Mars C) Jupiter D) Saturn
Q19. Which gas do plants absorb from the air for photosynthesis? A) Oxygen B) Nitrogen C) Carbon dioxide D) Hydrogen
Q20. Which gas do humans need to breathe to live? A) Carbon dioxide B) Oxygen C) Nitrogen D) Helium
Answer Key + Explained Answers:
Q1 – B) Ag. Ag is the symbol for silver (from Latin argentum). Si is silicon, Sr is strontium, Sv is not the symbol for silver.
Q2 – B) Fe. Fe is the symbol for iron (from Latin ferrum). Ir is iridium, In is indium, Io is not an element symbol.
Q3 – C) O. O is the symbol for oxygen. Ox, Oy and Og are not the symbol for oxygen.
Q4 – C) Na. Na is the symbol for sodium (from Latin natrium). So and Sd are not element symbols, Sm is samarium.
Q5 – B) H2O. Water is H2O. CO2 is carbon dioxide, O2 is oxygen gas, NaCl is common salt.
Q6 – B) 0°C. At standard atmospheric pressure, water freezes at 0°C.
Q7 – C) 100°C. At standard atmospheric pressure, water boils at 100°C.
Q8 – C) Heart. The heart pumps blood around the body. The liver, lung and kidney have different functions.
Q9 – B) Lung. The lungs are used for breathing. The heart pumps blood, the stomach digests food, the skin protects the body.
Q10 – C) Brain. The brain controls thought, memory and movement. The heart pumps blood, the liver filters blood, the kidney filters waste.
Q11 – C) 90. 30% of 300 = 0.30 × 300 = 90.
Q12 – C) 48. Pattern: ×2: 3 × 2 = 6, 6 × 2 = 12, 12 × 2 = 24, 24 × 2 = 48.
Q13 – C) 38. y + 12 = 50, so y = 50 − 12 = 38.
Q14 – C) 72. 12 × 6 = 72.
Q15 – C) 9. A nonagon has 9 sides (nona = nine). Heptagon has 7, octagon has 8, decagon has 10.
Q16 – C) Paris. Paris is the capital of France. Berlin is Germany, Madrid is Spain, Rome is Italy.
Q17 – D) Tokyo. Tokyo is the capital of Japan. Seoul is South Korea, Beijing is China, Bangkok is Thailand.
Q18 – B) Mars. Mars is known as the Red Planet because of its reddish appearance. Venus, Jupiter and Saturn are not called the Red Planet.
Q19 – C) Carbon dioxide. Plants absorb carbon dioxide for photosynthesis. Oxygen is released by plants, nitrogen is the main gas in air but is not the photosynthesis input, hydrogen is not absorbed for photosynthesis.
Q20 – B) Oxygen. Humans need oxygen to breathe to live. Carbon dioxide is breathed out, nitrogen makes up most of inhaled air but is not the gas the body uses, helium is not needed for breathing.
Weak-Section Review:
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. Science: revise Ag = silver, Fe = iron, O = oxygen, Na = sodium, H2O = water, freezing 0°C, boiling 100°C, heart pumps blood, lungs for breathing, brain controls thought. Quantitative: revise 30% of 300 = 90, ×2 series 48, y = 38, 12 × 6 = 72, nonagon 9 sides. General Knowledge: revise Paris = France, Tokyo = Japan, Mars = Red Planet, plants absorb carbon dioxide, humans need oxygen. Re-attempt this set in 2 days.
Closing line: These are original practice questions written for csspastpapers.pk. They are not FPSC official questions, and this site is not affiliated with FPSC.