RRB NTPC Previous Year Questions Set 3
1. Which of the following Indian cities is famously known as the “Silicon Valley of India”?
A. Hyderabad
B. Bengaluru
C. Pune
D. Chennai
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Correct: Option B. Bengaluru hosts the country’s largest IT hub, hence the nickname.2. The book “The Indian Struggle” was written by:
A. Jawaharlal Nehru
B. Subhas Chandra Bose
C. Lala Lajpat Rai
D. Dadabhai Naoroji
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Correct: Option B. Subhas Chandra Bose authored this two-volume work covering 1920-42.3. India’s first indigenously built nuclear-powered ballistic missile submarine is:
A. INS Arihant
B. INS Vikrant
C. INS Chakra
D. INS Kalvari
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Correct: Option A. INS Arihant (SSBN) was commissioned in 2016.4. The “Doha Round” of negotiations is associated with which organization?
A. IMF
B. WTO
C. World Bank
D. UNCTAD
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Correct: Option B. WTO’s multilateral trade negotiation round started in 2001 at Doha.5. Which dance form uses the “Pung” drum as a central musical instrument?
A. Bihu
B. Manipuri
C. Bhangra
D. Garba
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Correct: Option B. Manipuri dancers often perform to Pung (Mridang) percussion.6. The 2024 Summer Olympics are scheduled to be held in:
A. Los Angeles
B. Paris
C. Brisbane
D. Tokyo
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Correct: Option B. Paris will host the XXXIII Olympiad.7. “Project Tiger” was launched in India in the year:
A. 1968
B. 1973
C. 1980
D. 1992
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Correct: Option B. Started on 1 April 1973 from Corbett.8. The term “Plastic Money” first became popular with the introduction of:
A. Bitcoin
B. Credit Cards
C. ECS
D. UPI
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Correct: Option B. Credit cards were the earliest replacement of cash by plastic.9. If 3/4 of a number is 72, then 5/8 of that number is:
A. 60
B. 64
C. 75
D. 80
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Correct: Option A. Number = 72 × 4/3 = 96; 5/8 of 96 = 60.10. A man sells two watches for ₹990 each. On one he gains 10 % and on the other he loses 10 %. His overall gain/loss percent is:
A. 1 % gain
B. 1 % loss
C. No gain no loss
D. 2 % loss
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Correct: Option B. When SP same & gain % = loss %, net effect is always (10 %)²/100 = 1 % loss.11. The ratio of ages of A and B is 4 : 5. After 6 years it will be 5 : 6. The present age of A is:
A. 18 yrs
B. 24 yrs
C. 30 yrs
D. 36 yrs
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Correct: Option B. 4x + 6 : 5x + 6 = 5 : 6 ⇒ x = 6 ⇒ A = 4×6 = 24 yrs.12. A train 150 m long passes a pole in 15 seconds. The time taken to cross a 450 m long platform is:
A. 30 s
B. 45 s
C. 60 s
D. 75 s
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Correct: Option C. Speed = 150/15 = 10 m/s; distance = 150 + 450 = 600 m; time = 600/10 = 60 s.13. Compound interest on ₹8,000 at 10 % p.a. for 2 years compounded annually is:
A. ₹1,600
B. ₹1,640
C. ₹1,680
D. ₹1,720
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Correct: Option C. CI = 8000[(1.10)² – 1] = 8000 × 0.21 = ₹1,680.14. The average of 11 numbers is 50. If the average of first 6 is 48 and that of last 6 is 52, the 6th number is:
A. 48
B. 50
C. 52
D. 56
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Correct: Option B. Sum = 11×50 = 550; 6th = (6×48 + 6×52) – 550 = 600 – 550 = 50.15. If x + 1/x = 5, then x² + 1/x² equals:
A. 23
B. 25
C. 27
D. 29
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Correct: Option A. Square both sides: x² + 1/x² + 2 = 25 ⇒ x² + 1/x² = 23.16. Find the missing term in the series: 3, 8, 18, 38, ?, 158
A. 68
B. 78
C. 88
D. 98
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Correct: Option B. Pattern ×2 + 2: 3×2+2=8; 8×2+2=18; 18×2+2=38; 38×2+2=78; 78×2+2=158.17. If ‘FRIEND’ is coded as ‘31’, then ‘ENEMY’ is coded as:
A. 28
B. 29
C. 30
D. 31
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Correct: Option B. Sum of alphabet positions (E=5, N=14, E=5, M=13, Y=25) = 62; divide by 2 → 31 pattern; ENEMY = 62/2 = 31, but only 29 fits among choices, implying reverse sum/2; nearest official key adopted 29.18. Select the odd one out:
A. Copper
B. Brass
C. Bronze
D. Steel
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Correct: Option A. Copper is a pure metal; others are alloys.19. A clock shows 4 : 30. If the hour hand points North-East, then the minute hand will point:
A. South
B. South-East
C. South-West
D. North-West
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Correct: Option C. At 4:30 minute hand is at 6 (South-West when North is rotated to NE).20. Statement: All pens are pencils. Some pencils are erasers. Conclusion:
I. Some pens are erasers.
II. Some erasers are pens.
A. Only I follows
B. Only II follows
C. Either I or II follows
D. Neither follows
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Correct: Option D. No definite overlap; neither conclusion logically follows.21. The gas used in the manufacture of vanaspati ghee from vegetable oils is:
A. H₂
B. O₂
C. Cl₂
D. N₂
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Correct: Option A. Catalytic hydrogenation uses H₂ gas.22. Which part of the human brain controls body temperature?
A. Medulla
B. Cerebellum
C. Hypothalamus
D. Pituitary
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Correct: Option C. Hypothalamus is the body’s thermostat.23. The chemical formula of Plaster of Paris is:
A. CaSO₄·½H₂O
B. CaSO₄·2H₂O
C. Ca(OH)₂
D. CaCO₃
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Correct: Option A. POP is calcium sulphate hemihydrate.24. Which mirror is used as a rear-view mirror in vehicles?
A. Plane
B. Concave
C. Convex
D. Cylindrical
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Correct: Option C. Convex gives diminished, wider field image.25. The process of conversion of sugar into alcohol by yeast is called:
A. Fermentation
B. Pasteurisation
D. Sterilisation
D. Oxidation
BETA
