CSS Past Paper 2024 General Science and Ability MCQs (Part 1)

CSS | Past Paper | Compulsory | 2024 | Part 1 | MCQs

Below are the solved multiple-choice questions (MCQs) from the CSS Past Paper 2024 General Science and Ability MCQs (Part 1). Each question includes all the options, the correct answer is bolded, and a short explanation is provided for clarity.

1. In fish liver oil, there is:

(A) Vitamin A only
(B) Vitamin D only
(C) Vitamin A and vitamin E
(D) Vitamin A and Vitamin D
💡 Fish liver oil is rich in both Vitamin A and Vitamin D, essential for vision and bone health.

2. When day and night are equal?

(A) 23rd February and 21st September
(B) 21st March and 23rd September
(C) 23rd March and 21st September
(D) None of these
💡 Day and night are equal on the equinoxes—March 21 and September 23.

3. What are total number of combinations of 09 things taken 03 at a time?

(A) 18
(B) 27
(C) 48
(D) 84
💡 Combinations formula nCr = n! / [r!(n−r)!]; 9C3 = 84.

4. The chemical formula for alum is:

(A) KAl(SO₄)₂·12H₂O
(B) KSi(SO₄)₂·12H₂O
(C) KAl(SO₄)₂·8H₂O
(D) None of these
💡 Alum is potassium aluminum sulfate dodecahydrate.

5. If the radius of a circle is increased three times, then its area is increased:

(A) Three times
(B) Six times
(C) Nine times
(D) None of these
💡 Area ∝ r², so increasing radius 3× increases area by 3² = 9×.

6. One degree of longitude on the equator is equal to a distance of:

(A) 49 miles
(B) 69 miles
(C) 39 miles
(D) 60 miles
💡 At the equator, one degree of longitude equals approximately 69 miles (111 km).

7. The protein molecule is made of:

(A) Alkaloids
(B) Nucleosides
(C) Short range chain of amino acids
(D) Long range chain of amino acids
💡 Proteins are long chains (polymers) of amino acids linked by peptide bonds.

8. The minimum amount of vitamin stored in the human body is of:

(A) Vitamin D
(B) Vitamin C
(C) Vitamin E
(D) Vitamin A
💡 Vitamin C is water-soluble and not stored in large amounts in the body.

9. The isotopes of any element contain equal number of:

(A) Protons
(B) Neutrons
(C) Both electrons and protons
(D) None of these
💡 Isotopes have the same number of protons but different numbers of neutrons.

10. The pH of soil is raised using:

(A) Limestone
(B) Gypsum
(C) Urea
(D) None of these
💡 Limestone (calcium carbonate) neutralizes acidic soil, raising its pH.

11. Which of the following is used for measuring distance?

(A) Coulomb
(B) Light year
(C) Farad
(D) Curie
💡 A light-year is the distance light travels in one year — about 9.46 × 10¹² km.

12. Which of the following contains a greater number of carbon atoms in one mole of each compound?

(A) Chloroform
(B) Methanol
(C) Water
(D) Ethanol
💡 Ethanol (C₂H₅OH) has 2 carbon atoms per molecule, the most among the given options.

13. A pencil dipped in water appears bent due to:

(A) Reflection
(B) Diffraction
(C) Refraction
(D) None of these
💡 Light bends as it passes between media of different densities (air and water).

14. Fishes die outside the water due to:

(A) Carbon monoxide
(B) Oxygen
(C) Sunlight
(D) Non-absorption of oxygen
💡 Fish gills collapse outside water, preventing oxygen absorption.

15. In dementia a person:

(A) Loses his weight
(B) Loses thinking and writing
(C) Loses thinking, remembering, and reasoning
(D) All of these
💡 Dementia affects cognitive functions like memory, thinking, and reasoning.

16. Earthquake is measured by the instrument:

(A) Wave guide
(B) Barometer
(C) Seismograph
(D) Hydrometer
💡 A seismograph records the intensity and duration of seismic waves.

17. A cyclone is formed:

(A) When the warm air rises upward over the ocean
(B) When moist air rises upward over the ocean
(C) When moist air pressed downward over the ocean
(D) When warm, moist air rises upward over the ocean
💡 Cyclones form when warm, moist air rises, causing low pressure and storm rotation.

18. Why red light is used in traffic signal for danger?

(A) Due to short wavelength
(B) Due to high frequency
(C) It has long wavelength and high frequency
(D) It has long wavelength and short frequency
💡 Red light’s long wavelength travels farthest and is visible from a greater distance.

19. The heavy water is:

(A) Denoted by D₂O and contains simple hydrogen
(B) Denoted by H₂O and contains deuterium
(C) Denoted by D₂O and contains deuterium
(D) Denoted by H₂O and contains simple hydrogen
💡 Heavy water (D₂O) contains deuterium, an isotope of hydrogen with one neutron.

20. The ionosphere is located within the thermosphere and extends:

(A) From 60–300 km above Earth’s surface
(B) From 50–200 km above Earth’s surface
(C) From 50–300 km above Earth’s surface
(D) None of the above
💡 The ionosphere lies roughly 50–300 km above Earth, where solar radiation ionizes the atmosphere.

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• ✅ These CSS Past Paper 2024 General Science and Ability MCQs are compiled from authentic FPSC CSS past papers to match the real exam format.
• 💬 Practicing this CSS Past Paper 2024 General Science and Ability MCQs set builds strong conceptual clarity for upcoming CSS exams.
• 🧾 Every question in this CSS Past Paper 2024 General Science and Ability MCQs collection follows the official CSS exam syllabus approved by FPSC.
• 📊 Students appearing in CSS 2024 can rely on these General Science and Ability MCQs for focused and authentic revision.
• 🔍 The solved CSS Past Paper 2024 General Science and Ability MCQs section includes clear, one-line explanations for quick understanding.
• 🎯 Revise these CSS Past Paper 2024 General Science and Ability MCQs regularly to master key topics from the CSS exam syllabus and boost your score.
• 🏆 These CSS Past Paper 2024 General Science and Ability MCQs are essential for mastering the FPSC exam pattern and achieving success in CSS.

🏁 Final Note

Keep revising these CSS Past Paper 2024 General Science and Ability MCQs to strengthen your grip on important concepts and improve accuracy in upcoming CSS exams. Regular practice with these CSS Past Paper 2024 General Science and Ability MCQs will help you score higher and build full command over the CSS exam syllabus.

👉 Also read CSS Past Paper 2024 General Science and Ability (Part-II Descriptive)

📰 Check out other years’ past papers of General Science & Ability.

🔗 Check FPSC past papers directly from the official FPSC website.