RRB NTPC Previous Year Questions Set 6
- Which of the following rivers does NOT form a delta on the eastern coast of India?
- A. Mahanadi
- B. Godavari
- C. Narmada
- D. Krishna
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Correct: Option C. Explanation: The Narmada flows westwards through a rift valley and forms an estuary, not a delta.
- The book “The Discovery of India” was written by
- A. Jawaharlal Nehru
- B. Mahatma Gandhi
- C. Subhash Chandra Bose
- D. B. R. Ambedkar
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Correct: Option A. Explanation: Written in 1946 during Nehru’s Ahmednagar jail term.
- India’s first dedicated solar observatory, Aditya-L1, will be placed in which orbit?
- A. Geostationary orbit
- B. Low Earth orbit
- C. Halo orbit around L1 point
- D. Polar orbit
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Correct: Option C. Explanation: L1 Lagrange point offers uninterrupted Sun view.
- Which state launched the “Mission Shakti” campaign for women’s safety & empowerment?
- A. Maharashtra
- B. Uttar Pradesh
- C. Odisha
- D. Gujarat
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Correct: Option B. Explanation: UP govt scheme launched Oct 2020.
- The 2026 Commonwealth Games are scheduled to be hosted by
- A. Australia
- B. India
- C. South Africa
- D. Scotland
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Correct: Option A. Explanation: Victoria state (Australia) won the bid in April 2022.
- “Saffron” is obtained from which part of the plant?
- A. Root
- B. Stem
- C. Stigma
- D. Leaf
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Correct: Option C. Explanation: Dried stigmas of Crocus sativus flower.
- Which Article of the Indian Constitution deals with the election of the President?
- A. Article 52
- B. Article 54
- C. Article 61
- D. Article 324
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Correct: Option B. Explanation: Art. 54 specifies the electoral college.
- The world’s largest floating solar park (600 MW) as of 2023 is located in
- A. China
- B. India
- C. Singapore
- D. South Korea
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Correct: Option B. Explanation: Omkareshwar Dam, Madhya Pradesh.
- A train 180 m long crosses a platform in 24 s at 72 km/h. The length of the platform is
- A. 220 m
- B. 240 m
- C. 300 m
- D. 320 m
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Correct: Option C. Explanation: 72 km/h = 20 m/s; distance = 20×24 = 480 m; platform = 480 – 180 = 300 m.
- The average of 11 numbers is 42. If the average of the first 6 is 37 and that of the last 6 is 46, the sixth number is
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Correct: Option B. Explanation: Total 11 numbers = 462; sum first 6 = 222; sum last 6 = 276; sixth = 222+276–462 = 48.
- If x + 1/x = 5, then x² + 1/x² is
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Correct: Option A. Explanation: Square both sides: x²+1/x²+2 = 25 ⇒ x²+1/x² = 23.
- A shopkeeper marks goods 40 % above cost price and gives 20 % discount. His gain % is
- A. 12 %
- B. 15 %
- C. 20 %
- D. 25 %
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Correct: Option A. Explanation: CP = 100, MP = 140, SP = 112 ⇒ gain 12 %.
- The smallest 5-digit number exactly divisible by 12, 15 and 18 is
- A. 10080
- B. 10020
- C. 10060
- D. 10120
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Correct: Option A. Explanation: LCM = 180; smallest 5-digit multiple = 180×56 = 10080.
- A sum amounts to Rs 9680 in 2 years at 10 % p.a. compound interest. The sum is
- A. Rs 8000
- B. Rs 8100
- C. Rs 8200
- D. Rs 8250
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Correct: Option A. Explanation: P(1.1)² = 9680 ⇒ P = 9680/1.21 = 8000.
- 15, 30, 45, ?, 75, 90
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Correct: Option C. Explanation: Multiples of 15; missing 60.
- If ‘MOUSE’ is coded as ‘PRXUH’, then ‘KEYBOARD’ is coded as
- A. NHBERVRG
- B. NHBERURG
- C. NHBESVSG
- D. NHBERRUG
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Correct: Option A. Explanation: Each letter +3; K→N, E→H, Y→B, B→E, O→R, A→D, R→U, D→G ⇒ NHBERVRG.
- Find the odd one out:
- A. 1331
- B. 2197
- C. 2744
- D. 3375
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Correct: Option C. Explanation: 2744 = 14³; others are cubes of prime numbers (11,13,15).
- Pointing to a woman, a man said, “Her only brother is the father of my daughter’s father.” How is the woman related to the man?
- A. Aunt
- B. Mother
- C. Sister
- D. Grandmother
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Correct: Option A. Explanation: Woman’s brother is man’s maternal uncle ⇒ woman is man’s aunt.
- If A > B, B = C, and C < D, which statement is definitely true?
- A. A > D
- B. A < D
- C. B < D
- D. A = D
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Correct: Option C. Explanation: B = C < D ⇒ B < D always.
- The chemical formula of laughing gas is
- A. NO
- B. N₂O
- C. NO₂
- D. N₂O₄
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Correct: Option B. Explanation: Nitrous oxide (N₂O).
- Which part of the human brain controls body temperature?
- A. Cerebrum
- B. Hypothalamus
- C. Medulla
- D. Cerebellum
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Correct: Option B. Explanation: Hypothalamus is the thermoregulatory centre.
- The process of conversion of sugar into alcohol by yeast is called
- A. Fermentation
- B. Glycolysis
- C. Pasteurisation
- D. Acetification
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Correct: Option A. Explanation: Anaerobic respiration in yeast produces ethanol.
- 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. Explanation: Convex mirror gives diminished, wide field of view.
- The element with highest electrical conductivity among the following is
- A. Copper
- B. Silver
- C. Gold
- D. Aluminium
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Correct: Option B. Explanation: Silver has the lowest resistivity.
- Which vitamin is primarily responsible for blood clotting?
- A. Vitamin A
- B. Vitamin D
- C. Vitamin E
- D. Vitamin K
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Correct: Option D. Explanation: Vitamin K helps synthesize clotting factors.
BETA
