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The MCQs below are drawn from the Urdu (Compulsory) subject category.
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21
The shortest war in history lasted for how many minutes? (CSS-2024)
A. 38
B. 48
C. 58
D. None of these
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Explanation
The Anglo-Zanzibar War (1896) lasted 38 minutes, per historical records (Guinness World Records).
22
Which of the following statement is true? (CSS-2024)
A. Water-soluble vitamins cannot be stored in the body
B. Fat-soluble vitamins can be stored in the body
C. Body can absorb more of fat-soluble vitamins than required
D. All of these
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Explanation
Duplicate of Q16. All statements are correct (Shils).
23
Maintenance of soil fertility without addition of extra nutrition is due to: (CSS-2024)
A. Microbial activity
B. Crop residue
C. Moisture
D. None of these
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Explanation
Duplicate of Q14. Microbes recycle nutrients (Tate).
24
How do scientists know that the Earth’s core is made up of metal? (CSS-2024)
A. The density of the surface layer of Earth is much less than its average density
B. The Earth’s rotation speed indicates its core structure
C. The density of surface layer of Earth is greater than its total density
D. None of these
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Explanation
Duplicate of Q13. High density indicates a metallic core (Tarbuck).
25
Which of the following can be classified as renewable energy source? (CSS-2024)
A. Solar energy
B. Geothermal energy
C. Tidal energy
D. All of these
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Explanation
Duplicate of Q12. All are renewable (IEA).
26
Machine learning is a sub area of: (CSS-2024)
A. Hardware Engineering
B. Artificial Intelligence
C. Cyber Forensics
D. None of these
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Explanation
Duplicate of Q11. Machine learning is a subset of AI (Russell & Norvig).
27
Drum printers belong to which of the following category? (CSS-2024)
A. Ink jet printer
B. Laser printer
C. Chain printer
D. None of these
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Explanation
Duplicate of Q10. Drum printers are impact printers (Tanenbaum).
28
Which gas is used in gas welding? (CSS-2024)
A. Hydrogen
B. Oxygen
C. Ethylene
D. Acetylene
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Explanation
Duplicate of Q9. Acetylene produces a high-temperature flame (AWS).
29
Excessive bleeding during an injury is a deficiency of: (CSS-2024)
A. Vitamin K
B. Vitamin C
C. Vitamin B
D. None of these
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Explanation
Duplicate of Q8. Vitamin K aids clotting (Merck Manual).
30
The study of human body cells is called: (CSS-2024)
A. Physiology
B. Anatomy
C. Cytology
D. None of these
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Explanation
Duplicate of Q7. Cytology studies cells (Campbell Biology).
