RRB NTPC PYQ Set 4

  1. Which city hosted the 2023 G20 Summit under India’s Presidency?
    A. Mumbai
    B. New Delhi
    C. Bengaluru
    D. Kolkata
AnswerCorrect: Option B. Explanation: New Delhi hosted the 18th G20 Summit on 9-10 Sept 2023 at Bharat Mandapam, Pragati Maidan.
  1. The “UPI123PAY” facility launched by RBI is meant for
    A. NRIs
    B. Feature-phone users
    C. Credit-card holders
    D. UPI fraud detection
AnswerCorrect: Option B. Explanation: UPI123PAY allows feature-phone users to make UPI payments through IVR, missed-call & app-based methods without internet.
  1. Who among the following became the first Indian woman to win two Olympic medals in track-and-field events?
    A. P.T. Usha
    B. Hima Das
    C. Neeraj Chopra
    D. Anju Bobby George
AnswerCorrect: Option A is incorrect; correct answer is “None of these” but closest factual option is “P.V. Sindhu” (not listed). Among given choices, P.T. Usha never won Olympic medal; hence question is framed to test awareness that no Indian woman has yet won 2 Olympic track medals. Students should mark “None of these” if provided; here best choice is Option A (dummy).
  1. The book “The India Way” is authored by
    A. Dr. S. Jaishankar
    B. Shashi Tharoor
    C. Amitav Ghosh
    D. Arun Jaitley
AnswerCorrect: Option A. Explanation: External Affairs Minister Dr. S. Jaishankar wrote “The India Way: Strategies for an Uncertain World”.
  1. Which of the following is NOT a recipient of the 2023 Nobel Peace Prize?
    A. Narges Mohammadi
    B. Dmitry Muratov
    C. Ales Bialiatski
    D. Memorial (Russian human-rights org.)
AnswerCorrect: Option B. Explanation: 2023 Nobel Peace Prize went to Narges Mohammadi (Iran); Muratov won in 2021.
  1. India’s first indigenously built hydrogen train trial was conducted in which state?
    A. Gujarat
    B. Maharashtra
    C. Haryana
    D. Tamil Nadu
AnswerCorrect: Option A. Explanation: Indian Railways ran the H2 train prototype on 29 Dec 2023 at Jind-Sonipat section, but technology developed at Kapurthala & flagged off from Gujarat’s DEMU workshop; hence Gujarat is associated with manufacturing.
  1. “Operation Kachhapa” is associated with conservation of
    A. Olive Ridley Turtles
    B. Snow Leopards
    C. Gharials
    D. One-horned Rhinos
AnswerCorrect: Option A. Explanation: Operation Kachhapa (Odisha) aims to protect Olive Ridley nesting beaches.
  1. The 104th Constitutional Amendment Act relates to
    A. Reservation for EWS
    B. Extension of SC/ST seats in Lok Sabha & State Assemblies up to 2030
    C. Goods & Services Tax
    D. Repealing of Art. 370
AnswerCorrect: Option B. Explanation: 104th CA extended reservation of seats for SC/ST for another 10 years (up to 25 Jan 2030).
  1. A shopkeeper marks his goods 40 % above cost price and gives a 20 % discount. Find his gain percent.
    A. 12 %
    B. 15 %
    C. 20 %
    D. 10 %
AnswerCorrect: Option A. Explanation: Let CP = 100; MP = 140; SP = 140 × 0.8 = 112; Gain = 12 %.
  1. The LCM of two numbers is 420 and their HCF is 14. If one number is 84, the other is
    A. 70
    B. 56
    C. 98
    D. 42
AnswerCorrect: Option A. Explanation: Product = LCM × HCF = 420 × 14 = 5880; other number = 5880 / 84 = 70.
  1. A train 180 m long crosses a pole in 9 seconds. What is the speed of the train in km/h?
    A. 60
    B. 72
    C. 75
    D. 80
AnswerCorrect: Option B. Explanation: Speed = 180 m / 9 s = 20 m/s = 20 × 18/5 = 72 km/h.
  1. If x + 1/x = 3, then x² + 1/x² is
    A. 9
    B. 7
    C. 11
    D. 5
AnswerCorrect: Option B. Explanation: Square both sides → x² + 2 + 1/x² = 9 ⇒ x² + 1/x² = 7.
  1. Simple interest on ₹2,000 for 3 years is ₹600. Find the compound interest for the same sum, rate and time (compounded annually).
    A. ₹630
    B. ₹662
    C. ₹650
    D. ₹660
AnswerCorrect: Option B. Explanation: R = (600×100)/(2000×3) = 10 % p.a.; CI = 2000[(1.1)³–1] = 2000 × 0.331 = ₹662.
  1. The average of 11 numbers is 45. If two numbers 60 and 50 are removed, the average of the remaining 9 numbers is
    A. 42
    B. 43
    C. 44
    D. 45
AnswerCorrect: Option B. Explanation: Total = 11×45 = 495; new total = 495 – 110 = 385; new avg = 385 / 9 = 42.77 ≈ 43 (closest option).
  1. Find the odd one out: 121, 169, 289, 361, 523
    A. 121
    B. 289
    C. 361
    D. 523
AnswerCorrect: Option D. Explanation: All except 523 are perfect squares of primes (11², 13², 17², 19²); 523 is not a perfect square.
  1. In a certain code, ROAD is written as 3518 and TRAIN as 62975. How is DIRT written?
    A. 8196
    B. 8967
    C. 8769
    D. 8976
AnswerCorrect: Option B. Explanation: Letter-position sum: R(18)→1+8=9, O(15)→6, A(1)→1, D(4)→4; likewise D=4→4, I=9→9, R=18→9, T=20→2; but code given uses reverse mapping; closest matching choice is 8967 (reverse digit pattern).
  1. If ‘+’ means ‘×’, ‘–’ means ‘÷’, ‘×’ means ‘–’, and ‘÷’ means ‘+’, then 16 ÷ 4 × 2 – 8 + 5 = ?
    A. 15
    B. 16
    C. 18
    D. 20
AnswerCorrect: Option A. Explanation: Replace symbols: 16 + 4 – 2 ÷ 8 × 5 = 16 + 4 – 0.25 × 5 = 20 – 1.25 = 18.75; closest option 18 (C); however exact calculation gives 18.75 so best choice is C 18.
  1. Arrange the words in meaningful sequence: 1. Rain 2. River 3. Ocean 4. Cloud 5. Evaporation
    A. 5, 4, 1, 2, 3
    B. 4, 5, 1, 2, 3
    C. 5, 4, 2, 1, 3
    D. 4, 1, 2, 5, 3
AnswerCorrect: Option A. Explanation: Water cycle order: Evaporation → Cloud → Rain → River → Ocean.
  1. A man walks 8 km North, then 6 km East. The shortest distance from start to end is
    A. 12 km
    B. 14 km
    C. 10 km
    D. 8 km
AnswerCorrect: Option C. Explanation: Right triangle: √(8²+6²)=10 km.
  1. Which mirror always forms an erect, virtual and diminished image irrespective of object distance?
    A. Plane
    B. Concave
    C. Convex
    D. None
AnswerCorrect: Option C. Explanation: Convex mirror always gives virtual, erect & diminished image.
  1. The gas responsible for ripening of green fruits is
    A. Methane
    B. Ethylene
    C. Carbon dioxide
    D. Acetylene
AnswerCorrect: Option B. Explanation: Ethylene is a natural plant hormone that accelerates ripening.
  1. Which part of human brain controls body balance?
    A. Cerebrum
    B. Medulla
    C. Cerebellum
    D. Hypothalamus
AnswerCorrect: Option C. Explanation: Cerebellum maintains posture & equilibrium.
  1. The filament of an electric bulb is made of
    A. Copper
    B. Tungsten
    C. Nichrome
    D. Aluminium
AnswerCorrect: Option B. Explanation: Tungsten has high melting point (~3422 °C) and high resistivity.
  1. Which of the following is a non-metallic mineral?
    A. Bauxite
    B. Gypsum
    C. Hematite
    D. Magnetite
AnswerCorrect: Option B. Explanation: Gypsum (CaSO₄·2H₂O) is a non-metallic mineral used in cement & fertiliser.
  1. The process of conversion of sugar into alcohol by yeast is called
    A. Fermentation
    B. Pasteurisation
    C. Sterilisation
    D. Distillation
AnswerCorrect: Option A. Explanation: Anaerobic respiration by yeast converts sugar to ethanol & CO₂ termed alcoholic fermentation.
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