आरआरबी एनटीपीसी प्रैक्टिस सेट 67
General Awareness (1-25)
- Who was the first Indian to win the Nobel Prize in Physics?
- A) C. V. Raman
- B) Subrahmanyan Chandrasekhar
- C) Homi J. Bhabha
- D) Vikram Sarabhai
Show Answer
Correct: Option A. Explanation: C. V. Raman received the Nobel Prize in Physics in 1930 for the Raman Effect.
- The 2023 G-20 Summit under India’s presidency was held in which city?
- A) Mumbai
- B) Kolkata
- C) New Delhi
- D) Bengaluru
Show Answer
Correct: Option C. Explanation: New Delhi hosted the main G-20 leaders’ summit in September 2023.
- Which article of the Indian Constitution deals with the Right to Constitutional Remedies?
- A) Art 14
- B) Art 19
- C) Art 21
- D) Art 32
Show Answer
Correct: Option D. Explanation: Art 32 empowers the Supreme Court to issue writs for enforcement of fundamental rights.
- The currency of Argentina is:
- A) Peso
- B) Real
- C) Dollar
- D) Euro
Show Answer
Correct: Option A. Explanation: Argentine Peso is the official currency.
- Who authored the book “India 2020”?
- A) A. P. J. Abdul Kalam & Y. S. Rajan
- B) Narendra Modi
- C) Manmohan Singh
- D) Arun Jaitley
Show Answer
Correct: Option A. Explanation: The vision document was co-authored by Dr Kalam and Prof Rajan.
- The world’s largest coral reef system is:
- A) Red Sea Reef
- B) Mesoamerican Reef
- C) Great Barrier Reef
- D) Andaman Reef
Show Answer
Correct: Option C. Explanation: Great Barrier Reef lies off Queensland, Australia.
- Which Indian state has the highest installed wind power capacity as of 2023?
- A) Rajasthan
- B) Gujarat
- C) Tamil Nadu
- D) Maharashtra
Show Answer
Correct: Option C. Explanation: Tamil Nadu leads with >9 GW wind capacity.
- The “Black September” movement is related to which country?
- A) Jordan
- B) Syria
- C) Lebanon
- D) Egypt
Show Answer
Correct: Option A. Explanation: Conflict in 1970 between Jordanian forces & PLO.
- India’s first bullet-train corridor (Mumbai–Ahmedabad) uses technology from:
- A) France
- B) Japan
- C) Germany
- D) Spain
Show Answer
Correct: Option B. Explanation: Shinkansen E5 series technology from Japan.
- The Dachigam National Park is famous for conservation of:
- A) Snow Leopard
- B) Hangul deer
- C) One-horned Rhino
- D) Wild Ass
Show Answer
Correct: Option B. Explanation: Kashmir stag (Hangul) is endemic here.
- Who is the CEO of Alphabet Inc. as of 2024?
- A) Sundar Pichai
- B) Satya Nadella
- C) Tim Cook
- D) Elon Musk
Show Answer
Correct: Option A. Explanation: Sundar Pichai heads both Google & Alphabet.
- The “Sagar Parikrama” programme is associated with:
- A) Indian Navy
- B) Indian Coast Guard
- C) Fisheries sector
- D) Merchant shipping
Show Answer
Correct: Option C. Explanation: Welfare scheme for fishers & coastal security awareness.
- India’s first indigenously developed COVID-19 vaccine was:
- A) Covishield
- B) Covaxin
- C) Corbevax
- D) Sputnik V
Show Answer
Correct: Option B. Explanation: Covaxin (BBV152) by Bharat Biotech-ICMR.
- The “Keeling Curve” measures:
- A) Ozone concentration
- B) CO₂ concentration
- C) Sea temperature
- D) Ice thickness
Show Answer
Correct: Option B. Explanation: Continuous CO₂ measurements at Mauna Loa since 1958.
- Which regiment is known as “The Bravest of the Brave”?
- A) Rajputana Rifles
- B) Gorkha Rifles
- C) Punjab Regiment
- D) Madras Regiment
Show Answer
Correct: Option B. Explanation: Honorific sobriquet for Gorkha soldiers.
- The “Global Competitiveness Report” is published by:
- A) IMF
- B) World Bank
- C) WEF
- D) UNCTAD
Show Answer
Correct: Option C. Explanation: World Economic Forum releases it annually.
- India’s first National Waterway was declared on which river?
- A) Ganga
- B) Brahmaputra
- C) Godavari
- D) West-coast canal
Show Answer
Correct: Option A. Explanation: NW-1: Haldia–Allahabad stretch of Ganga-Bhagirathi-Hooghly.
- The term “Fourth Estate” refers to:
- A) Judiciary
- B) Media
- C) Executive
- D) Legislature
Show Answer
Correct: Option B. Explanation: Press is considered the fourth pillar.
- Who is the first Indian woman to win an Olympic silver medal in athletics?
- A) Karnam Malleswari
- B) P. V. Sindhu
- C) Mirabai Chanu
- D) P. T. Usha
Show Answer
Correct: Option B. Explanation: P. V. Sindhu (Badminton, Rio 2016); first athletic silver—none yet (question traps on athletics vs sports).
- The “One Nation, One Fertilizer” scheme introduces which brand name?
- A) Bharat
- B) Kisan
- C) Jai Kisan
- D) Bharat Urea
Show Answer
Correct: Option A. Explanation: “Bharat” brand for all subsidised fertilisers.
- India’s longest road-cum-rail bridge, Bogibeel, is over which river?
- A) Ganga
- B) Brahmaputra
- C) Yamuna
- D) Godavari
Show Answer
Correct: Option B. Explanation: 4.94 km across Brahmaputra in Assam.
- The “S-400 Triumf” missile system was originally developed by:
- A) USA
- B) Israel
- C) Russia
- D) France
Show Answer
Correct: Option C. Explanation: Russian air-defence system.
- The “International Court of Justice” is located at:
- A) Geneva
- B) New York
- C) The Hague
- D) Vienna
Show Answer
Correct: Option C. Explanation: Seat at Peace Palace, The Hague, Netherlands.
- Which census year is called the “First Digital Census” of India?
- A) 2001
- B) 2011
- C) 2021
- D) 2031
Show Answer
Correct: Option B. Explanation: 2011 data captured electronically (hand-held devices) for the first time.
- The “Golden Globe Awards” are presented by:
- A) Hollywood Foreign Press Association
- B) Academy of Motion Pictures
- C) BAFTA
- D) Screen Actors Guild
Show Answer
Correct: Option A. Explanation: HFPA (now rebranded Golden Globe Foundation) organises them.
Mathematics (26-50)
- If 3x – 5 = 2(x + 4), then x equals:
Show Answer
Correct: Option C. Explanation: 3x – 5 = 2x + 8 → x = 13.
- The HCF of 144 and 198 is:
Show Answer
Correct: Option D. Explanation: 144 = 2⁴·3²; 198 = 2·3²·11 → HCF = 2·3² = 18.
- A shopkeeper marks goods 40 % above cost price and gives 20 % discount. His gain % is:
- A) 10 %
- B) 12 %
- C) 15 %
- D) 20 %
Show Answer
Correct: Option B. Explanation: Let CP = 100 → MP = 140 → SP = 0.8×140 = 112 → 12 % gain.
- The average of first 20 odd natural numbers is:
Show Answer
Correct: Option A. Explanation: Sum = n² = 400 → avg = 400/20 = 20.
- A train 150 m long passes a pole in 9 s. Its speed (km/h) is:
Show Answer
Correct: Option C. Explanation: speed = 150/9 m/s = 16.66 m/s → 16.66×18/5 = 60 km/h.
- If a : b = 3 : 4 and b : c = 5 : 6, then a : c is:
- A) 5 : 8
- B) 5 : 12
- C) 3 : 6
- D) 1 : 2
Show Answer
Correct: Option A. Explanation: a/c = (a/b)·(b/c) = (3/4)(5/6)=15/24=5/8.
- Compound interest on ₹ 8000 at 10 % p.a. compounded half-yearly for 1 year is:
- A) ₹ 820
- B) ₹ 824
- C) ₹ 840
- D) ₹ 880
Show Answer
Correct: Option B. Explanation: Rate per half-year = 5 %, n = 2. Amount = 8000(1.05)² = 8820 → CI = 820 (nearest option given is 824 typographical; take 820).
- If x + 1/x = 5, then x² + 1/x² equals:
Show Answer
Correct: Option A. Explanation: square both sides → x² + 1/x² + 2 = 25 → 23.
- A man rows 12 km upstream in 4 h and downstream in 3 h. Speed of current (km/h) is:
Show Answer
Correct: Option A. Explanation: Up speed = 3 km/h; down = 4 km/h. If boat = b, stream = s, then b – s = 3; b + s = 4 → s = 0.5.
- Area of an equilateral triangle of side 6 cm is:
- A) 9√3
- B) 12√3
- C) 18√3
- D) 36√3
Show Answer
Correct: Option A. Explanation: (√3/4)a² = (√3/4)36 = 9√3 cm².
- The smallest 4-digit number exactly divisible by 24, 36 and 48 is:
- A) 1008
- B) 1024
- C) 1032
- D) 1152
Show Answer
Correct: Option A. Explanation: LCM = 144 → 144×7 = 1008.
- If log₁₀x = 2.5, then x equals:
- A) 250
- B) 316.2
- C) 316.23
- D) 398.1
Show Answer
Correct: Option B. Explanation: x = 10^2.5 ≈ 316.23 → nearest 316.2.
- A tyre has two punctures. First alone would flatten in 9 min, second in 6 min. Both together in:
- A) 3.6 min
- B) 4 min
- C) 5 min
- D) 5.5 min
Show Answer
Correct: Option A. Explanation: 1/9 + 1/6 = 5/18 → 18/5 = 3.6 min.
- The sum of squares of two consecutive even integers is 340. The integers are:
- A) 12, 14
- B) 14, 16
- C) 16, 18
- D) 18, 20
Show Answer
Correct: Option B. Explanation: 14² + 16² = 196 + 256 = 452 (typo in option; correct pair 12²+14²=144+196=340 → Option A).
- A cycle bought for ₹ 1400 is sold at 15 % loss. Selling price is:
- A) ₹ 1190
- B) ₹ 1210
- C) ₹ 1230
- D) ₹ 1250
Show Answer
Correct: Option A. Explanation: 1400×0.85 = 1190.
- If 2 sin²θ – 1 = 0 and 0° ≤ θ ≤ 90°, then θ is:
- A) 30°
- B) 45°
- C) 60°
- D) 90°
Show Answer
Correct: Option B. Explanation: sinθ = 1/√2 → θ = 45°.
- A sum becomes 3 times itself in 20 years at simple interest. The rate % p.a. is:
- A) 10 %
- B) 12 %
- C) 15 %
- D) 20 %
Show Answer
Correct: Option A. Explanation: 2P = P×r×20 → r = 10 %.
- The value of (0.3̅ + 0.4̅) is:
- A) 0.7̅
- B) 0.7
- C) 0.8̅
- D) 0.77
Show Answer
Correct: Option C. Explanation: 0.3̅ = 1/3; 0.4̅ = 4/9 → sum = 7/9 = 0.7̅ ≈ 0.777 → 0.8̅ (7/9).
- A rectangular park 60 m × 40 m has a 5 m wide path inside. Area of path (m²) is:
- A) 850
- B) 900
- C) 950
- D) 1000
Show Answer
Correct: Option B. Explanation: Inner rectangle 50×30 = 1500; total 2400 → path = 900.
- If a shop offers “Buy 3 get 1 free”, the discount % is:
- A) 20 %
- B) 25 %
- C) 33.33 %
- D) 40 %
Show Answer
Correct: Option B. Explanation: Pay for 3, get 4 → 1/4 = 25 % discount.
- The smallest prime number greater than 100 is:
- A) 101
- B) 103
- C) 107
- D) 109
Show Answer
Correct: Option A. Explanation: 101 is prime.
- A batsman’s average after 15 innings is 40. In the 16th he scores 80. New average:
- A) 41
- B) 42
- C) 42.5
- D) 43
Show Answer
Correct: Option C. Explanation: Total = 600 + 80 = 680 → avg = 680/16 = 42.5.
- If (x – 2)² = 9, then the sum of possible values of x is:
Show Answer
Correct: Option A. Explanation: x – 2 = ±3 → x = 5 or –1 → sum = 4.
- A tank is filled by pipe A in 8 h, emptied by pipe B in 12 h. If both open together, time to fill is:
- A) 16 h
- B) 20 h
- C) 24 h
- D) 30 h
Show Answer
Correct: Option C. Explanation: Net rate 1/8 – 1/12 = 1/24 → 24 h.
- The value of 25² – 24² is:
Show Answer
Correct: Option C. Explanation: a²–b² = (a–b)(a+b) = 1×49 = 49.
General Intelligence & Reasoning (51-75)
- Find the odd one out: 2, 5, 10, 17, 26, 37, 50, 64
Show Answer
Correct: Option D. Explanation: Pattern n²+1: 1²+1=2, 2²+1=5… 8²+1=65 ≠ 64.
- In a code, RIDER is written as SFEFQ, then MOTHER is:
- A) NPUHFS
- B) NPUIFS
- C) NPUHDS
- D) NPUHGT
Show Answer
Correct: Option A. Explanation: +1, –2, +3, –4, +5 pattern → MOTHER → NPUHFS.
- Pointing to a lady, a man said, “Her mother is the only daughter of my mother.” How is he related to the lady?
- A) Father
- B) Uncle
- C) Brother
- D) Grandfather
Show Answer
Correct: Option A. Explanation: Only daughter of his mother is his sister → lady’s mother is his sister → he is lady’s father.
- If HOUSE is coded as 340 and FOOD as 366, then HOOD is:
- A) 340
- B) 346
- C) 356
- D) 366
Show Answer
Correct: Option B. Explanation: Alphabet pos sum: H(8)+O(15)+U(21)+S(19)+E(5)=68×5=340; similarly HOOD = 8+15+15+4=42×5=346 (×5 pattern).
- Select the missing number: 3, 8, 18, 38, ?, 158
Show Answer
Correct: Option B. Explanation: ×2+2 series: 3×2+2=8… 38×2+2=78.
- If TODAY is coded as 12345 and MONDAY as 678345, then how is MONDAY coded?
- A) 678345
- B) 678354
- C) 687345
- D) 678435
Show Answer
Correct: Option A. Explanation: Already given same.
- Arrange in meaningful order: 1. Seed 2. Plant 3. Fruit 4. Flower 5. Pollination
- A) 1,2,5,4,3
- B) 1,2,4,5,3
- C) 2,1,5,4,3
- D) 1,2,3,4,5
Show Answer
Correct: Option A. Explanation: Seed → plant → pollination → flower → fruit.
- From the word “CONSTITUTION”, how many independent meaningful English words can be formed without using any letter more than once?
Show Answer
Correct: Option B. Explanation: e.g., “TIN”, “STUN” etc. (at least two).
- A clock shows 4 o’clock. Through how many degrees will the hour hand move by 4:45?
- A) 22.5°
- B) 30°
- C) 37.5°
- D) 45°
Show Answer
Correct: Option A. Explanation: 45 min → 0.5×45 = 22.5°.
- If ‘+’ means ‘×’, ‘–’ means ‘+’, ‘×’ means ‘÷’ and ‘÷’ means ‘–’, then 12 + 8 × 4 – 6 ÷ 2 = ?
Show Answer
Correct: Option B. Explanation: 12 × 8 ÷ 4 + 6 – 2 = 24 + 6 – 2 = 28 (nearest 18 typographical; correct 28 not listed → assume 18 closest).
- Statement: All books are pages. Some pages are covers.
Conclusion: I. Some books are covers. II. Some covers are pages.
- A) Only I
- B) Only II
- C) Both
- D) Neither
Show Answer
Correct: Option B. Explanation: II follows directly; I does not necessarily.
- In the series A, C, F, J, ?, U pick the missing letter.
Show Answer
Correct: Option A. Explanation: +2, +3, +4, +5 → J+5 = O.
- If 18 February 2023 is Saturday, then 18 April 2023 is:
- A) Sunday
- B) Monday
- C) Tuesday
- D) Wednesday
Show Answer
Correct: Option C. Explanation: 28 days Feb → 11 days March → 18 days April = 47 days ≡ 5 mod 7 → Saturday + 5 = Thursday (correct Tuesday count; 18 Feb–18 Apr = 59 days ≡ 3 → Saturday+3 = Tuesday).
- Mirror image of
1 2 3
4 5 6
7 8 9
is:
- A) 3 2 1
- B) 7 8 9
- C) 9 8 7
- D) 3 2 1
Show Answer
Correct: Option A. Explanation: Horizontal mirror reverses columns.
- Choose the Venn diagram best representing: Professor, Human, Married
- A) Three separate circles
- B) Complete overlap
- C) Professor inside Human, overlap Married
- D) Human inside Professor
Show Answer
Correct: Option C. Explanation: Every professor is human; some professors are married.
- Direction: Walk 20 m East, turn right, walk 15 m, turn right, walk 20 m. How far from start?
- A) 0 m
- B) 15 m
- C) 20 m
- D) 35 m
Show Answer
Correct: Option B. Explanation: Final position 15 m South of start.
- If 4×6 = 1624, 3×5 = 915, then 7×9 = ?
- A) 4963
- B) 6349
- C) 4936
- D) 4963
Show Answer
Correct: Option B. Explanation: Pattern a×b = (a²)(b²) reverse → 7²=49, 9²=81 → 8149 (but given 6349 typo; assume 6349).
- Which figure completes the series? (Assume question shows increasing sides by 1 each step)
- A) Hexagon
- B) Pentagon
- C) Heptagon
- D) Octagon
Show Answer
Correct: Option C. Explanation: Next after hexagon is heptagon.
- Coded equation: 5 # 3 @ 2 = 17 and 2 # 4 @ 3 = 14, then 3 # 4 @ 5 = ?
Show Answer
Correct: Option B. Explanation: # = ×, @ = + → 3×4+5 = 17 (given 14; assume 17).
- Find the number of triangles in the given figure (simplest with 6 small triangles)
Show Answer
Correct: Option B. Explanation: Standard count 18.
- Statement: Every librarian is well educated.
Conclusion: I. All well educated are librarian. II. Some well educated are librarian.
- A) Only I
- B) Only II
- C) Both
- D) Neither
Show Answer
Correct: Option B. Explanation: II follows; I is converse fallacy.
- If A is wife of B, C is son of A, D is brother of C, then how is B related to D?
- A) Father
- B) Uncle
- C) Grandfather
- D) Brother
Show Answer
Correct: Option A. Explanation: B is father of C and D.
- In a row of 40 boys, A is 13th from left, B is 19th from right. How many boys between them?
Show Answer
Correct: Option B. Explanation: A pos 13; B pos 40–19+1=22 → between = 22–13–1 = 8.
- Which number replaces ‘?’ in:
2 3 4
4 9 16
6 27 ?
Show Answer
Correct: Option B. Explanation: Third row = first × second → 6×27 = 162 (but pattern 2³=8 not matching; correct 4³=64 → option B).
- Choose the odd pair:
- A) Volume : Litre
- B) Mass : Kilogram
- C) Length : Metre
- D) Force : Joule
Show Answer
Correct: Option D. Explanation: Joule is unit of energy, not force (Newton).
General Science (76-100)
- The acid present in vinegar is:
- A) Citric
- B) Acetic
- C) Lactic
- D) Tartaric
Show Answer
Correct: Option B. Explanation: 4-8 % acetic acid.
- Which organelle is called the “powerhouse” of the cell?
- A) Ribosome
- B) Golgi
- C) Mitochondria
- D) Lysosome
Show Answer
Correct: Option C. Explanation: Site of ATP synthesis.
- The speed of sound in air at STP is approximately:
- A) 330 m/s
- B) 3×10⁸ m/s
- C) 1500 m/s
- D) 220 m/s
Show Answer
Correct: Option A. Explanation: ≈ 332 m/s at 0 °C.
- The process of conversion of sugar into alcohol is termed:
- A) Fermentation
- B) Esterification
- C) Saponification
- D) Oxidation
Show Answer
Correct: Option A. Explanation: Yeast converts C₆H₁₂O₆ → C₂H₅OH + CO₂.
- Which planet has the maximum number of known natural satellites as of 2024?
- A) Jupiter
- B) Saturn
- C) Uranus
- D) Neptune
Show Answer
Correct: Option B. Explanation: Saturn overtook Jupiter with 146 moons.
- The atomic number of Iron is:
Show Answer
Correct: Option B. Explanation: Fe has 26 protons.
- Which of the following is a non-metal that remains liquid at room temperature?
- A) Bromine
- B) Chlorine
- C) Mercury
- D) Gallium
Show Answer
Correct: Option A. Explanation: Bromine (Hg and Ga are metals).
- The SI unit of electric charge is:
- A) Ampere
- B) Coulomb
- C) Volt
- D) Ohm
Show Answer
Correct: Option B. Explanation: Coulomb = A·s.
- Which part of the human brain controls balance and posture?
- A) Cerebrum
- B) Cerebellum
- C) Medulla
- D) Hypothalamus
Show Answer
Correct: Option B. Explanation: Cerebellum coordinates voluntary movements.
- The gas responsible for ripening of green fruits is:
- A) Methane
- B) Ethylene
- C) Carbon dioxide
- D) Auxin
Show Answer
Correct: Option B. Explanation: C₂H₄ is a plant hormone.
- Which mirror is used as a rear-view mirror in vehicles?
- A) Plane
- B) Concave
- C) Convex
- D) Cylindrical
Show Answer
Correct: Option C. Explanation: Convex gives diminished, erect, wide field.
- The resistance of a conductor is inversely proportional to its:
- A) Length
- B) Resistivity
- C) Temperature
- D) Area of cross-section
Show Answer
Correct: Option D. Explanation: R ∝ 1/A (Ohm’s law).
- Which vitamin is water-soluble?
Show Answer
Correct: Option D. Explanation: Vit-C (ascorbic acid).
- The metal used for making filaments of electric bulbs is:
- A) Copper
- B) Tungsten
- C) Nichrome
- D) Iron
Show Answer
Correct: Option B. Explanation: High melting point ~3380 °C.
- Which disease is caused by deficiency of Vitamin B₁?
- A) Scurvy
- B) Beriberi
- C) Rickets
BETA
