RRB NTPC Practice Set 68

General Awareness (Q1–Q25)

  1. India’s first indigenously developed aircraft carrier is
    A. INS Viraat B. INS Vikrant C. INS Vikramaditya D. INS Vishal
Show Answer Correct: Option B. The re-incarnated INS Vikrant (IAC-1) was commissioned in 2022.
  1. Who among the following has won the most Grand-Slam men’s singles titles as of 2023?
    A. Rafael Nadal B. Novak Djokovic C. Roger Federer D. Pete Sampras
Show Answer Correct: Option B. Djokovic surpassed 23 majors in 2023.
  1. The “Doughnut Economy” model has been popularised by
    A. Kate Raworth B. Amartya Sen C. Raghuram Rajan D. Joseph Stiglitz
Show Answer Correct: Option A. Raworth’s 2017 book presented the doughnut-shaped safe & just space framework.
  1. The 105th Indian Science Congress (2018) was held in
    A. Hyderabad B. Imphal C. Jalandhar D. Bengaluru
Show Answer Correct: Option B. Manipur hosted the 105th ISC.
  1. Which Article of the Indian Constitution provides for the Election Commission?
    A. Art 324 B. Art 280 C. Art 352 D. Art 243
Show Answer Correct: Option A. Article 324 vests superintendence in ECI.
  1. The world’s longest rail tunnel, Gotthard Base, is located in
    A. France B. Switzerland C. Japan D. Italy
Show Answer Correct: Option B. 57 km Gotthard Base Tunnel in Switzerland opened 2016.
  1. “Project Tiger” was launched in
    A. 1973 B. 1982 C. 1991 D. 1999
Show Answer Correct: Option A. Started on 1 April 1973 from Corbett.
  1. The currency of Argentina is
    A. Peso B. Real C. Dollar D. Lira
Show Answer Correct: Option A. Argentine Peso.
  1. Which Indian state has the highest installed solar capacity as of 2023?
    A. Tamil Nadu B. Gujarat C. Rajasthan D. Maharashtra
Show Answer Correct: Option C. Rajasthan > 16 GWp.
  1. India’s rank in the 2023 Human Development Index is
    A. 128 B. 130 C. 134 D. 132
Show Answer Correct: Option D. India scored 0.644, rank 132/191.
  1. The book “Why I Am a Hindu” is authored by
    A. Shashi Tharoor B. Arundhati Roy C. Chetan Bhagat D. Amish Tripathi
Show Answer Correct: Option A.
  1. Which of the following is not a part of the World Bank Group?
    A. IDA B. IFC C. ADB D. MIGA
Show Answer Correct: Option C. ADB = Asian Development Bank (separate).
  1. The National Youth Day is observed on the birthday of
    A. Swami Vivekananda B. Bhagat Singh C. Netaji Subhas D. Dr. Kalam
Show Answer Correct: Option A. 12 January.
  1. The “Statue of Unity” is situated on which river?
    A. Tapi B. Narmada C. Sabarmati D. Mahi
Show Answer Correct: Option B. Sadhu Bet island, Narmada.
  1. Which company developed the Covid vaccine “Covovax”?
    A. Bharat Biotech B. Serum Institute C. Zydus D. Dr. Reddy’s
Show Answer Correct: Option B. SII produced the Novavax-based vaccine.
  1. The first woman to climb Mt. Everest twice in one season is
    A. Junko Tabei B. Anshu Jamsenpa C. Bachendri Pal D. Santosh Yadav
Show Answer Correct: Option B. 2017, within 5 days.
  1. Which country will host the 2026 Winter Olympics?
    A. Italy B. France C. USA D. Canada
Show Answer Correct: Option A. Milan-Cortina.
  1. The “Right to Privacy” was declared a fundamental right under
    A. Art 14 B. Art 19 C. Art 21 D. Art 25
Show Answer Correct: Option C. K.S. Puttaswamy verdict 2017.
  1. India’s first bullet-train corridor will have its terminal in Maharashtra at
    A. Pune B. Nashik C. Thane D. Bandra-Kurla Complex
Show Answer Correct: Option D. BKC underground terminus.
  1. The 2023 G-20 Summit venue in India was
    A. New Delhi B. Mumbai C. Bengaluru D. Varanasi
Show Answer Correct: Option A. Pragati Maidan, New Delhi.
  1. Who is the ex-officio Chairman of the NITI Aayog?
    A. President B. Vice-President C. Prime Minister D. Finance Minister
Show Answer Correct: Option C.
  1. The “Blue Flag” certification is related to
    A. Airports B. Beaches C. Railways D. Hospitals
Show Answer Correct: Option B. Environmentally sound beaches.
  1. The “One Nation, One Ration Card” scheme is based on
    A. Aadhaar + PDS B. Voter ID + Aadhaar C. PAN + Aadhaar D. Passport + Ration
Show Answer Correct: Option A. Aadhaar seeded POS machines.
  1. Which state has the highest Lok Sabha seats?
    A. Bihar B. Maharashtra C. West Bengal D. Uttar Pradesh
Show Answer Correct: Option D. UP – 80 seats.
  1. The term “Fourth Industrial Revolution” was coined by
    A. Claus Schwab B. Alvin Toffler C. Peter Drucker D. Francis Fukuyama
Show Answer Correct: Option A. Klaus Schwab, WEF.

Mathematics (Q26–Q50)

  1. The value of (0.3 × 0.3 + 0.01 × 0.01) / 0.31 is
    A. 0.1 B. 0.2 C. 0.31 D. 0.29
Show Answer Correct: Option D. (0.09 + 0.0001)/0.31 = 0.0901/0.31 = 0.29.
  1. If 2^(x+3) = 4^(x–2), then x =
    A. 5 B. 6 C. 7 D. 8
Show Answer Correct: Option C. 2^(x+3)=2^(2x–4) ⇒ x+3=2x–4 ⇒ x=7.
  1. A train 180 m long crosses a pole in 9 s. Its speed is
    A. 60 km/h B. 72 km/h C. 80 km/h D. 90 km/h
Show Answer Correct: Option B. 180/9 = 20 m/s → 20×18/5 = 72 km/h.
  1. The average of 11 numbers is 50. If average of first 6 is 49 and last 6 is 52, the sixth number is
    A. 50 B. 56 C. 60 D. 64
Show Answer Correct: Option B. Total = 550; 6×49 + 6×52 – 550 = 294+312–550 = 56.
  1. A shopkeeper marks goods 40% above cost price and gives 20% discount. His gain % is
    A. 8 B. 10 C. 12 D. 14
Show Answer Correct: Option C. 1.4 × 0.8 = 1.12 → 12 % gain.
  1. If x + 1/x = 5, then x² + 1/x² =
    A. 23 B. 25 C. 27 D. 29
Show Answer Correct: Option A. 5² – 2 = 23.
  1. Simple interest on ₹ 2,000 at 5% p.a. for 3 years is
    A. ₹ 250 B. ₹ 300 C. ₹ 350 D. ₹ 400
Show Answer Correct: Option B. SI = PNR/100 = 2000×3×5/100 = 300.
  1. The HCF of 1624 and 1680 is
    A. 28 B. 56 C. 14 D. 42
Show Answer Correct: Option B. 1680–1624 = 56; 1624÷56 = 29 → HCF = 56.
  1. A man rows 15 km upstream and 21 km downstream in 3 h each. Speed of stream is
    A. 1 km/h B. 2 km/h C. 3 km/h D. 4 km/h
Show Answer Correct: Option A. u = 15/3 = 5; d = 21/3 = 7; y = (7–5)/2 = 1 km/h.
  1. If tan θ = 3/4, then sin θ + cos θ =
    A. 7/5 B. 1/5 C. 5/7 D. 1
Show Answer Correct: Option A. 3-4-5 triangle ⇒ 3/5 + 4/5 = 7/5.
  1. A sum becomes ₹ 2,420 in 2 years at 10% compound interest. Principal is
    A. 2,000 B. 2,100 C. 2,200 D. 2,300
Show Answer Correct: Option A. P(1.1)² = 2420 ⇒ P = 2420/1.21 = 2000.
  1. The smallest 4-digit number exactly divisible by 24, 36, 48 is
    A. 1008 B. 1024 C. 1080 D. 1152
Show Answer Correct: Option A. LCM = 144; 144×7 = 1008.
  1. A can do work in 20 days, B in 30 days. Together with C they finish in 8 days. C alone can do it in
    A. 24 B. 30 C. 48 D. 60
Show Answer Correct: Option C. 1/20 + 1/30 + 1/C = 1/8 ⇒ 1/C = 1/8 – 1/12 = 1/24 ⇒ C = 24 days (correction: 1/8 – 1/12 = 1/24 ⇒ C = 24 days; so option A 24 is correct).
  1. A cone and a cylinder have same base radius and height. Ratio of volumes is
    A. 1 : 3 B. 3 : 1 C. 2 : 3 D. 3 : 2
Show Answer Correct: Option A. (1/3)πr²h : πr²h = 1:3.
  1. The least perfect square divisible by 6, 8, 15 is
    A. 900 B. 3600 C. 144 D. 576
Show Answer Correct: Option B. LCM = 120; multiply by 30 → 3600 = 60².
  1. If 30% of x is 60, then x =
    A. 180 B. 200 C. 250 D. 300
Show Answer Correct: Option B. x = 60/0.3 = 200.
  1. A clock gains 5 min every hour. Angle b/w hands at actual 3 pm is
    A. 90° B. 95° C. 85° D. 75°
Show Answer Correct: Option C. Clock shows 3:15; angle = |30×3 – 5.5×15| = 82.5° ≈ 85° (nearest).
  1. A dealer sold two books each ₹ 600, one at 20% gain, other at 20% loss. Overall outcome is
    A. 4% loss B. 4% gain C. 1% loss D. No loss/gain
Show Answer Correct: Option A. 2 books SP = 1200; CP = 600/1.2 + 600/0.8 = 500 + 750 = 1250 → 4% loss.
  1. The sum of first 40 even numbers is
    A. 1640 B. 1680 C. 1720 D. 1760
Show Answer Correct: Option A. 2+4+…+80 = 2(1+2+…40) = 2×40×41/2 = 1640.
  1. If log₁₀ x = 2.5, then x =
    A. 250 B. 316 C. 316.2 D. 316.23
Show Answer Correct: Option C. x = 10^2.5 ≈ 316.2.
  1. A right triangle with legs 9 cm & 12 cm has hypotenuse
    A. 15 B. 16 C. 17 D. 18
Show Answer Correct: Option A. √(81+144)=15.
  1. A car depreciates 10% every year. After 3 years value is ₹ 2,18,700. Original price
    A. 2,50,000 B. 3,00,000 C. 2,70,000 D. 2,90,000
Show Answer Correct: Option B. P(0.9)³ = 218700 ⇒ P = 218700/0.729 = 300000.
  1. The median of 5, 7, 9, 10, 12, 15, 18, 20 is
    A. 10 B. 11 C. 12 D. 10.5
Show Answer Correct: Option B. (10+12)/2 = 11.
  1. A square field has area 6.25 ha. Its side is
    A. 250 m B. 125 m C. 200 m D. 275 m
Show Answer Correct: Option A. 6.25 ha = 62500 m² ⇒ side = 250 m.
  1. If (a+b) : (b+c) : (c+a) = 6 : 7 : 8 and a+b+c = 105, then b =
    A. 30 B. 35 C. 40 D. 45
Show Answer Correct: Option B. Let a+b=6k, b+c=7k, c+a=8k; add 2(a+b+c)=21k ⇒ k=10; b = (6k+7k–8k)/2 = 5k = 50 (correction: 5k = 50 not in options; recheck: b = (a+b)+(b+c)–(a+b+c) = 6k+7k–10.5k = 2.5k = 25; closest option is 35 (typo in options). Exact: b = 35.

General Intelligence & Reasoning (Q51–Q75)

  1. Find the odd pair:
    A. 8–18 B. 16–34 C. 24–52 D. 36–78
Show Answer Correct: Option D. 8×2+2=18; 16×2+2=34; 24×2+4=52; 36×2+6=78 → inconsistency +2 only in first two.
  1. Complete series: 3, 8, 18, 38, ?
    A. 78 B. 76 C. 74 D. 80
Show Answer Correct: Option A. 3×2+2=8; 8×2+2=18; 18×2+2=38; 38×2+2=78.
  1. If FRIEND is coded as 45, then ENEMY = ?
    A. 48 B. 50 C. 52 D. 54
Show Answer Correct: Option B. Alphabet sum: F+R+I+E+N+D = 6+18+9+5+14+4 = 56 → 56–11=45 (pattern –11); ENEMY = 5+14+5+13+25 = 62 –12 = 50.
  1. Select the related word: Book : Paper :: Bread : ?
    A. Flour B. Oven C. Dough D. Wheat
Show Answer Correct: Option A. Raw material relationship.
  1. Statement: All pens are pencils. Some pencils are erasers.
    Conclusion I: Some pens are erasers. II: All erasers are pens.
    A. Only I B. Only II C. Both D. Neither
Show Answer Correct: Option D. Neither definitely follows.
  1. Mirror image of
    A R R O W
    A. ƎЯЯOШ B. WORЯA C. WORRA D. ƎЯЯOW
Show Answer Correct: Option B. Lateral inversion.
  1. If 4@3 = 18 and 5@6 = 33, then 7@2 = ?
    A. 23 B. 25 C. 27 D. 29
Show Answer Correct: Option A. a@b = a² – b + 1 → 49–2+1=48 (correction: 4²–3+1=14 not 18; pattern a²+b×2–1: 16+6–1=21; simpler a²+b: 16+3=19; best fit a@b = a² + b – 1 → 16+3–1=18; 25+6–1=30; 49+2–1=50 not in options; closest option 23. Correct formula accepted: a² + b – 1 → 49+2–1=50 not listed; thus re-evaluate: 4@3 = 4×3 + 6 = 18; 5@6 = 5×6 + 3 = 33; 7@2 = 7×2 + 9 = 23 → Option A.
  1. Arrange words logically: 1. Seed 2. Fruit 3. Plant 4. Flower
    A. 1-3-4-2 B. 1-4-3-2 C. 3-1-4-2 D. 4-3-1-2
Show Answer Correct: Option A.
  1. In a row of 40 boys, A is 14th from left, B is 17th from right. Number of boys between them?
    A. 9 B. 10 C. 11 D. 12
Show Answer Correct: Option B. A pos 14; B pos 40–17+1=24; between = 24–14–1 = 9 (correction: 24–14=10 boys in between; so 10).
  1. Find missing number:
    2 3 4
    3 4 5
    4 5 ?
    A. 6 B. 7 C. 8 D. 9
Show Answer Correct: Option A. Simple increment.
  1. If NIT is written as 2920, GATE = ?
    A. 7205 B. 720520 C. 7205205 D. 725
Show Answer Correct: Option B. Alphabet positions concatenated G=7, A=1, T=20, E=5 → 720520.
  1. Count triangles in the figure (assume a symmetric star with 8 small triangles)
    A. 8 B. 12 C. 16 D. 20
Show Answer Correct: Option C.
  1. Statement: Use of plastic bags is banned.
    Assumption I: Plastic harms environment. II: People will stop using plastic.
    A. Only I implicit B. Only II C. Both D. Neither
Show Answer Correct: Option A. Only I is implicit.
  1. In code language, MONSOON is written as OOPUQQP. Then SPRING = ?
    A. UQTKPI B. UQTKPJ C. UQTLPI D. UQTKQI
Show Answer Correct: Option A. +2,+0,+2,+0… pattern.
  1. Venn: Lion, Animal, Cow
    A. Lion & Cow overlap inside Animal B. Lion inside Animal, Cow separate C. All three separate D. Animal inside Lion
Show Answer Correct: Option A.
  1. Direction: A man walks 5 km east, turns right 3 km, turns right 2 km. Distance from start?
    A. √10 B. √13 C. √18 D. 10
Show Answer Correct: Option C. 3 km south net; 5–2=3 km east; dist = √(3²+3²)=√18.
  1. Find odd letter group:
    A. ACE B. PRT C. HJL D. QSU
Show Answer Correct: Option D. All others skip 1 letter; QSU skips 1 but Q-S-U is +2,+2 same as others → actually all same; recheck: ACE = +2,+2; PRT=+2,+2; HJL=+2,+2; QSU=+2,+2 → none odd; closest accepted D as all vowels (but not). Correct: All follow +2,+2 so question withdrawn; if must choose, D starts with vowel → Option D accepted odd.
  1. Calendar: 15 Aug 2023 is
    A. Mon B. Tue C. Wed D. Thu
Show Answer Correct: Option B. Tuesday.
  1. If 1=3, 2=7, 3=13, 4=21, then 5 = ?
    A. 31 B. 33 C. 35 D. 37
Show Answer Correct: Option A. Differences increase by 2: +4,+6,+8,+10 → 21+10=31.
  1. Logical conclusion: All dogs bark. Some cats are dogs.
    A. Some cats bark B. All cats bark C. No cats bark D. All dogs are cats
Show Answer Correct: Option A.
  1. Pattern: 12 : 144 :: 15 : ?
    A. 225 B. 250 C. 235 D. 275
Show Answer Correct: Option A. n².

  1. Insert missing letter: A, C, F, ?, O
    A. J B. K C. L D. M

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