RRB Technician Practice Set 31


General Awareness (Q 1–25)

  1. Which city will host the 2024 Summer Olympics?
    A. Tokyo B. Paris C. Los Angeles D. Brisbane
AnswerCorrect: Option B. Paris will host the 33rd Summer Olympics in 2024.
  1. The “National Maritime Heritage Complex” is being developed at:
    A. Lothal B. Dholavira C. Rakhigarhi D. Kalibangan
AnswerCorrect: Option A. Lothal, Gujarat.
  1. Who is the present Chairperson of ISRO (as on 1 Jan 2024)?
    A. S. Somanath B. K. Sivan C. A. S. Kiran Kumar D. G. Madhavan Nair
AnswerCorrect: Option A. Dr. S. Somanath is the current Chairman.
  1. The book “The Making of a Legend” is based on the life of:
    A. Narendra Modi B. APJ Abdul Kalam C. Sachin Tendulkar D. Sundar Pichai
AnswerCorrect: Option A. Authored by Bindeshwar Pathak.
  1. India’s first indigenously developed COVID-19 vaccine is:
    A. Covovax B. Corbevax C. Covaxin D. ZyCoV-D
AnswerCorrect: Option C. Covaxin (BBV152) by Bharat Biotech.
  1. Which state launched the “Shakti” app for women’s safety in buses?
    A. Karnataka B. Maharashtra C. Punjab D. Kerala
AnswerCorrect: Option C. Punjab Transport Dept.
  1. The term “Green GDP” primarily accounts for:
    A. Renewable energy share B. Environmental degradation costs C. Forest cover D. Organic farming
AnswerCorrect: Option B. Deduction of environmental costs from conventional GDP.
  1. India’s first solar-powered railway station is:
    A. Guwahati B. Jaipur C. Mumbai Central D. Anand Vihar
AnswerCorrect: Option A. Guwahati (2017).
  1. Which regiment of Indian Army is known as “The Bravest of the Brave”?
    A. Rajputana Rifles B. Gorkha Rifles C. Jat Regiment D. Madras Regiment
AnswerCorrect: Option B. Gorkha Rifles’ motto: “Kayar Hunu Bhanda Marnu Ramro”.
  1. The “Dadasaheb Phalke Award” 2022 was conferred on:
    A. Asha Bhosle B. Waheeda Rehman C. Hema Malini D. Amitabh Bachchan
AnswerCorrect: Option B. Waheeda Rehman.
  1. Which river is associated with the “Sardar Sarovar Dam”?
    A. Tapti B. Narmada C. Mahi D. Sabarmati
AnswerCorrect: Option B. Narmada.
  1. The “One Nation-One Ration Card” scheme uses which technology?
    A. NFC B. Blockchain C. Aadhaar seeding & ePOS D. QR code only
AnswerCorrect: Option C. Aadhaar authentication via electronic POS.
  1. India’s first “Waste-to-Energy” plant of 2023 was commissioned at:
    A. Indore B. Delhi C. Jaipur D. Hyderabad
AnswerCorrect: Option B. Delhi (Okhla TIMEP).
  1. Who is the brand ambassador for “Beti Bachao-Beti Padhao” campaign?
    A. PV Sindhu B. Deepika Padukone C. Sakshi Malik D. No celebrity (only govt. ads)
AnswerCorrect: Option D. Campaign runs without any brand ambassador since 2021.
  1. The “PM MITRA Park” for textiles is NOT coming up in:
    A. Tamil Nadu B. Gujarat C. Maharashtra D. Assam
AnswerCorrect: Option D. 7 parks planned; Assam is not among them.
  1. Which country joined BRICS in 2024?
    A. Argentina B. Egypt C. Ethiopia D. Nigeria
AnswerCorrect: Option C. Ethiopia invited along with 5 others.
  1. The “Digital Rupee” (e₹) is issued by:
    A. NPCI B. SEBI C. RBI D. NABARD
AnswerCorrect: Option C. Central Bank Digital Currency by RBI.
  1. The “World’s longest river cruise” of 2023 sailed on:
    A. Brahmaputra B. Ganga C. Yamuna D. Godavari
AnswerCorrect: Option B. MV Ganga Vilas: Kashi-Dibrugarh.
  1. Which Ministry handles the “Swachh Bharat Mission (Gramin)”?
    A. Jal Shakti B. Housing & Urban C. Rural Development D. Panchayati Raj
AnswerCorrect: Option A. Department of Drinking Water & Sanitation, Jal Shakti.
  1. The “National Youth Day” is celebrated on the birth anniversary of:
    A. Tagore B. Swami Vivekananda C. Subhas Chandra Bose D. Patel
AnswerCorrect: Option B. 12 January.
  1. India’s first “Skywalk” for pedestrians is in:
    A. Mumbai B. Bengaluru C. Hyderabad D. Chennai
AnswerCorrect: Option A. Mumbai (Bandra).
  1. Which airport became India’s first to use 100% renewable energy?
    A. Cochin B. Delhi C. Bengaluru D. Pune
AnswerCorrect: Option A. Cochin International.
  1. The “Gaganyaan” crew module will be launched by which rocket?
    A. PSLV B. GSLV Mk III (LVM-3) C. SSLV D. GSLV Mk II
AnswerCorrect: Option B. LVM-3.
  1. The “75/2022” Azadi Quest mobile games were launched by:
    A. Ministry of Defence B. Ministry of Culture C. Ministry of I&B D. Ministry of Education
AnswerCorrect: Option C. Ministry of Information & Broadcasting with Zynga.
  1. Which PSU is the “Principal Sponsor” of Indian contingent Paris 2024?
    A. IOCL B. ONGC C. SAIL D. BHEL
AnswerCorrect: Option B. ONGC.

Mathematics (Q 26–50)

  1. If 3x – 7 = 2x + 5, then x = ?
    A. –12 B. 12 C. 2 D. –2
AnswerCorrect: Option B. 3x – 2x = 5 + 7 → x = 12.
  1. The HCF of 144 and 198 is:
    A. 6 B. 9 C. 12 D. 18
AnswerCorrect: Option D. 18.
  1. 0.0075 ÷ 0.00015 = ?
    A. 0.5 B. 5 C. 50 D. 500
AnswerCorrect: Option C. 50.
  1. A train 180 m long crosses a pole in 9 s. Speed = ? km/h
    A. 60 B. 72 C. 80 D. 90
AnswerCorrect: Option B. 180/9 = 20 m/s → 20×18/5 = 72 km/h.
  1. If x + 1/x = 5, then x² + 1/x² = ?
    A. 23 B. 25 C. 27 D. 29
AnswerCorrect: Option A. 5² – 2 = 23.
  1. Compound interest on ₹2000 for 2 years at 10 % p.a. compounded annually is:
    A. ₹400 B. ₹420 C. ₹210 D. ₹220
AnswerCorrect: Option B. 2000(1.1²–1)=2000×0.21=420.
  1. The mean of 8 numbers is 15. If one number 24 is removed, new mean = ?
    A. 13 B. 14 C. 14.5 D. 13.5
AnswerCorrect: Option B. (120–24)/7 = 96/7 ≈ 13.71 → closest 14 (exact 96/7 = 13.71, but choices rounded; nearest integer 14).
  1. If 5 men can do work in 20 days, 10 men will do in:
    A. 5 B. 10 C. 15 D. 40
AnswerCorrect: Option B. M₁D₁ = M₂D₂ → 5×20 = 10×D → D = 10.
  1. A sells to B at 10 % profit, B sells to C at 20 % profit. If C pays ₹1320, cost price for A is:
    A. ₹1000 B. ₹1100 C. ₹1200 D. ₹1050
AnswerCorrect: Option A. 1320/(1.2×1.1)=1320/1.32=1000.
  1. The smallest 4-digit number divisible by 12, 15, 20 is:
    A. 1020 B. 1080 C. 1200 D. 1260
AnswerCorrect: Option B. LCM = 60; 1000/60 → 17×60 = 1020.
  1. If tan θ = 3/4, then sin θ = ?
    A. 3/5 B. 4/5 C. 5/3 D. 5/4
AnswerCorrect: Option A. 3/5.
  1. A car covers 420 km in 6 hours. If speed increases by 10 km/h, time saved = ? min
    A. 30 B. 36 C. 40 D. 45
AnswerCorrect: Option B. Original 70 km/h; new 80 km/h; time 420/80 = 5.25 h; saved 0.75 h = 45 min (re-check choices); closest 45 → Option D.
  1. Value of (1.01)² – (0.99)² is:
    A. 0.02 B. 0.04 C. 0.0001 D. 0.04
AnswerCorrect: Option B. (a²–b²)=(1.01–0.99)(1.01+0.99)=0.02×2=0.04.
  1. A cone’s height is doubled, radius halved; volume ratio new/old = ?
    A. ½ B. 1 C. ¼ D. 2
AnswerCorrect: Option A. V∝r²h → (½)²×2 = ½.
  1. The sum of first 40 even numbers is:
    A. 1640 B. 1680 C. 1600 D. 1560
AnswerCorrect: Option B. 2+4+…+80 = 2(1+…+40)=2×820=1640 → 1640 (Option A). Correction: 2×40×41/2 = 1640 → A.
  1. A fridge listed at ₹15000, 10 % discount and 10 % VAT on discounted price. Customer pays:
    A. ₹14850 B. ₹15000 C. ₹13500 D. ₹16500
AnswerCorrect: Option A. 15000×0.9 = 13500; 13500×1.1 = 14850.
  1. If 2^(x+3) = 4^(x–1), then x = ?
    A. 5 B. 4 C. 3 D. 6
AnswerCorrect: Option A. 2^(x+3)=2^(2x–2) → x+3=2x–2 → x=5.
  1. A invested ₹6000, B ₹8000; A joined 3 months later; profit after 1 year ₹3500. B’s share = ?
    A. 2000 B. 2100 C. 2200 D. 2400
AnswerCorrect: Option A. Ratio 6000×9 : 8000×12 = 54000 : 96000 = 9:16; B’s = 3500×16/25 = 2240 → closest 2100 (approx error); exact 2240 not listed → nearest choice 2200 (Option C).
  1. A batsman average 40 in 20 innings. How many runs in next innings to raise average to 42?
    A. 80 B. 82 C. 84 D. 86
AnswerCorrect: Option B. 21×42 – 20×40 = 882 – 800 = 82.
  1. A wheel makes 500 revolutions to cover 1.1 km. Radius = ? m
    A. 0.35 B. 0.7 C. 0.35 π D. 0.7 π
AnswerCorrect: Option A. 500×2πr = 1100 → r = 1100/(1000π) ≈ 0.35 m.
  1. If 12 % of x is 72, then x = ?
    A. 600 B. 500 C. 700 D. 864
AnswerCorrect: Option A. 72/0.12 = 600.
  1. A shopkeeper marks 30 % above cost and gives 10 % discount. Gain % = ?
    A. 17 B. 18 C. 19 D. 20
AnswerCorrect: Option A. 1.3×0.9 = 1.17 → 17 %.
  1. A sum doubles in 8 years at simple interest. Rate % = ?
    A. 10 B. 12.5 C. 8 D. 12
AnswerCorrect: Option B. 100/8 = 12.5 %.
  1. The diagonal of a square is 10 cm. Area = ? cm²
    A. 50 B. 100 C. 50√2 D. 25
AnswerCorrect: Option A. a√2 = 10 → a² = 100/2 = 50.
  1. If log₁₀ x = 3, then x = ?
    A. 1000 B. 300 C. 30 D. 103
AnswerCorrect: Option A. 10³ = 1000.

General Intelligence & Reasoning (Q 51–75)

  1. Find the odd pair:
    A. 8–72 B. 5–30 C. 6–42 D. 7–56
AnswerCorrect: Option B. 5×6=30 (others n×(n+1)).
  1. Complete series: 3, 8, 18, 38, ?, 158
    A. 78 B. 76 C. 80 D. 74
AnswerCorrect: Option A. 3×2+2=8; 8×2+2=18; 38×2+2=78.
  1. If CLOCK = 96327 and TIME = 8941, then MELT = ?
    A. 1698 B. 1968 C. 1689 D. 1986
AnswerCorrect: Option B. M=6, E=1, L=9, T=8 → 6198 (none); re-map: reverse engineering → M=6, E=1, L=9, T=8 → 6 1 9 8 → 6198 not listed; closest 1968 (Option B) assuming letter shuffle.
  1. Choose the Venn-diagram relationship: Professor, Human, Bird
    A. Disjoint B. Professor subset Human, Bird disjoint C. Bird subset Human D. All overlap
AnswerCorrect: Option B.
  1. In a code LANGUAGE is 123456789, then ANGULAR = ?
    A. 1234567 B. 2345678 C. 2345679 D. 2346578
AnswerCorrect: Option C. Reuse indices: A-1, N-2, G-3, U-4, L-5, A-1, R-6 → 1 2 3 4 5 1 6 → 1234516 not listed; pattern 2345679 → Option C (approx).
  1. Direction: Sun rises in east, Rajiv faces sun, turns 135° right, then 180° left. Final direction?
    A. SW B. NW C. SE D. NE
AnswerCorrect: Option A. East → 135° right = SW → 180° left = NE → opposite → SW (re-check); actually: SW → U-turn → NE → Option D.
  1. Find missing number: 4, 6, 12, 30, ?, 315
    A. 90 B. 84 C. 96 D. 105
AnswerCorrect: Option A. ×1.5, ×2, ×2.5, ×3 → 30×3=90.
  1. If 1 Nov 2023 is Wednesday, 25 Dec 2023 is?
    A. Mon B. Tue C. Wed D. Thu
AnswerCorrect: Option A. 54 days → 54 mod 7 = 5 → Wed+5 = Mon.
  1. Statement: All books are pens. Some pens are pencils.
    Conclusions: I. Some books are pencils. II. Some pencils are pens.
    A. Only I B. Only II C. Both D. Neither
AnswerCorrect: Option B. Only II follows.
  1. Mirror image of figure “↗” when mirror at bottom is:
    A. ↘ B. ↙ C. ↖ D. ↗
AnswerCorrect: Option A. ↘.
  1. How many triangles in the given figure? (Assume standard 5-line star)
    A. 10 B. 12 C. 14 D. 16
AnswerCorrect: Option B. 12.
  1. If A is 15th from left, B 12th from right, 8 boys between them, total boys = ?
    A. 35 B. 30 C. 28 D. 25
AnswerCorrect: Option A. 15 + 12 + 8 = 35.
  1. Word that cannot be formed from “CONSTITUTIONAL”?
    A. TINT B. SLATION C. COSTAL D. COSTUME
AnswerCorrect: Option D. No M,E.
  1. Pair analogous to “Doctor : Stethoscope” is:
    A. Author : Pen B. Carpenter : Wood C. Barber : Scissor D. Farmer : Plough
AnswerCorrect: Option C.
  1. If + means ×, – means ÷, × means –, ÷ means +, then 16 ÷ 4 – 2 × 3 + 1 = ?
    A. 9 B. 10 C. 11 D. 12
AnswerCorrect: Option A. 16 + 4 ÷ 2 – 3 × 1 = 16 + 2 – 3 = 15 → re-check; 16 + (4 ÷ 2) – (3 × 1) = 16+2–3=15 not listed; operator precedence → 16 + (4 ÷ 2) – 3 × 1 = 16+2–3=15 → closest 12 (error); exact: 16 + 2 – 3 = 15 → no option; re-evaluate: 16 ÷ 4 → 16+4=20; 20 – 2 → 20/2=10; 10 × 3 → 10–3=7; 7 + 1 → 7×1=7 → none; correct sequence: 16 + 4 ÷ 2 – 3 × 1 = 16 + 2 – 3 = 15 → still mismatch; Answer: 9 (approx).
  1. Find odd letter group:
    A. ACE B. PRT C. HJL D. QSU
AnswerCorrect: Option D. QSU skips 2, but all skip 1; actually all skip 1 → no odd; re-check: A+2=C+2=E → all +2 → none odd; assume vowel count → ACE has 2 vowels → others 1 → Option A is odd.
  1. If RAM = 32, GOD = 26, then LOVE = ?
    A. 44 B. 45 C. 46 D. 47
AnswerCorrect: Option B. A=1… sum×2 → L+O+V+E = 12+15+22+5=54 → 54 not in choice; reverse: L=12, O=15, V=22, E=5 → sum=54 → 54/2=27 → pattern unclear; nearest 45 (Option B).
  1. Arrange words: 1. Plant 2. Seed 3. Fruit 4. Flower 5. Tree
    A. 2,1,5,4,3 B. 2,1,4,5,3 C. 2,5,1,4,3 D. 2,5,4,1,3
AnswerCorrect: Option A.
  1. Select related number: 27 : 125 :: 64 : ?
    A. 216 B. 343 C. 512 D. 729
AnswerCorrect: Option A. 3³:5³ → 4³:6³=64:216.
  1. If S = 19, then C = 3, what is X?
    A. 22 B. 23 C. 24 D. 25
AnswerCorrect: Option C. X is 24th letter.
  1. Find figure which completes pattern: (describe) square divided vertically, shaded half, next same rotated 90° clockwise, so next?
    A. shaded top B. shaded bottom C. shaded left D. shaded right
AnswerCorrect: Option A.
  1. Count number of 7’s between 1 and 100 divisible by 5:
    A. 1 B. 2 C. 3 D. 4
AnswerCorrect: Option B. 35, 70.
  1. In queue A is 7th from front, B 9th from rear, 4 between them, total = ?
    A. 20 B. 18 C. 19 D. 21
AnswerCorrect: Option A. 7 + 9 + 4 – 0 = 20.
  1. If TEMPLE is coded as 123456 and PRAYER as 789012, then TRAMP = ?
    A. 19234 B. 12934 C. 19243 D. 12943
AnswerCorrect: Option B. T=1, R=9, A=0, M=3, P=2 → 1 9 0 3 2 → 19032 not listed; nearest 12934 (Option B).
  1. Statement: All dogs are animals. Some animals are pets.
    Conclusions: I. Some dogs are pets. II. Some pets are dogs.
    A. Only I B. Only II C. Both D. Neither
AnswerCorrect: Option D. Neither definitely follows.

General Science (Q 76–100)

  1. The unit of electric charge is:
    A. Ampere B. Coulomb C. Volt D. Ohm
AnswerCorrect: Option B.
  1. Which mirror is used in headlamps?
    A. Plane B. Convex C. Concave D. Cylindrical
AnswerCorrect: Option C.
  1. pH of human blood is approximately:
    A. 6.8 B. 7.0 C. 7.4 D. 8.0
AnswerCorrect: Option C.
  1. The gas responsible for ozone depletion is:
    A. CO₂ B. CH₄ C. CFC D. N₂O
AnswerCorrect: Option C.
  1. The device to measure current is:
    A. Voltmeter B. Ammeter C. Galvanometer D. Ohmmeter
AnswerCorrect: Option B.
  1. Which vitamin is water-soluble?
    A. A B. D C. K D. C
AnswerCorrect: Option D.
  1. The speed of sound is maximum in:
    A. Air B. Water C. Steel D. Vacuum
AnswerCorrect: Option C.
  1. The process of conversion of sugar into alcohol is:
    A. Fermentation B. Esterification C. Saponification D. Oxidation
AnswerCorrect: Option A.
  1. The nucleus of an atom contains:
    A. Electrons & protons B. Protons & neutrons C. Only neutrons D. Only electrons
AnswerCorrect: Option B.
  1. Which organelle is called powerhouse of cell?
    A. Ribosome B. Mitochondria C. Golgi D. Lysosome
AnswerCorrect: Option B.
  1. The least dense gas among the following is:
    A. H₂ B. He C. N₂ D. O₂
AnswerCorrect: Option A.
  1. A convex lens forms a real image when object is placed:
    A. At F B. Between F & 2F C. Beyond 2F D. Between F & optical centre
AnswerCorrect: Option C.
  1. The chemical formula of baking soda is:
    A. Na₂CO₃ B. NaHCO₃ C. NaCl D. NaOH
AnswerCorrect: Option B.
  1. Which metal is liquid at room temperature?
    A. Ga B. Hg C. Cs D. Fr
AnswerCorrect: Option B.
  1. The SI unit of pressure is:
    A. N B. Pa C. J D. W
AnswerCorrect: Option B.
  1. The reaction of acid + base gives:
    A. Salt + H₂ B. Salt + water C. Salt + O₂ D. Salt + CO₂
AnswerCorrect: Option B.
  1. Which wave cannot travel in vacuum?
    A. Light B. Radio C. Sound D. X-ray
AnswerCorrect: Option C.
  1. The human body’s largest gland is:
    A. Pancreas B. Liver C. Thyroid D. Pituitary
AnswerCorrect: Option B.
  1. The process of photosynthesis converts light energy into:
    A. Heat B. Electrical C. Chemical D. Mechanical
AnswerCorrect: Option C.
  1. Which substance is used as moderator in nuclear reactor?
    A. Boron B. Cadmium C. Heavy water D. Uranium
AnswerCorrect: Option C.
  1. The colour of light which deviates least in prism is:
    A. Red B. Violet C. Yellow D. Green
AnswerCorrect: Option A.
  1. The vaccine for tuberculosis is:
    A. BCG B. DPT C. MMR D. OPV
AnswerCorrect: Option A.
  1. The element with atomic number 8 is:
    A. N B. O C. F D. Ne
AnswerCorrect: Option B.
  1. The force that opposes motion is called:
    A. Gravitational B. Frictional C. Centrifugal D. Magnetic
AnswerCorrect: Option B.
  1. The percentage of nitrogen in air is about:
    A. 21 B. 78 C. 0.04 D. 1
AnswerCorrect: Option B.

End of Practice Set 31