RRB Technician Practice Set 31
General Awareness (Q 1–25)
- Which city will host the 2024 Summer Olympics?
A. Tokyo B. Paris C. Los Angeles D. Brisbane
Answer
Correct: Option B. Paris will host the 33rd Summer Olympics in 2024.- The “National Maritime Heritage Complex” is being developed at:
A. Lothal B. Dholavira C. Rakhigarhi D. Kalibangan
Answer
Correct: Option A. Lothal, Gujarat.- 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
Answer
Correct: Option A. Dr. S. Somanath is the current Chairman.- 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
Answer
Correct: Option A. Authored by Bindeshwar Pathak.- India’s first indigenously developed COVID-19 vaccine is:
A. Covovax B. Corbevax C. Covaxin D. ZyCoV-D
Answer
Correct: Option C. Covaxin (BBV152) by Bharat Biotech.- Which state launched the “Shakti” app for women’s safety in buses?
A. Karnataka B. Maharashtra C. Punjab D. Kerala
Answer
Correct: Option C. Punjab Transport Dept.- The term “Green GDP” primarily accounts for:
A. Renewable energy share B. Environmental degradation costs C. Forest cover D. Organic farming
Answer
Correct: Option B. Deduction of environmental costs from conventional GDP.- India’s first solar-powered railway station is:
A. Guwahati B. Jaipur C. Mumbai Central D. Anand Vihar
Answer
Correct: Option A. Guwahati (2017).- 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
Answer
Correct: Option B. Gorkha Rifles’ motto: “Kayar Hunu Bhanda Marnu Ramro”.- The “Dadasaheb Phalke Award” 2022 was conferred on:
A. Asha Bhosle B. Waheeda Rehman C. Hema Malini D. Amitabh Bachchan
Answer
Correct: Option B. Waheeda Rehman.- Which river is associated with the “Sardar Sarovar Dam”?
A. Tapti B. Narmada C. Mahi D. Sabarmati
Answer
Correct: Option B. Narmada.- The “One Nation-One Ration Card” scheme uses which technology?
A. NFC B. Blockchain C. Aadhaar seeding & ePOS D. QR code only
Answer
Correct: Option C. Aadhaar authentication via electronic POS.- India’s first “Waste-to-Energy” plant of 2023 was commissioned at:
A. Indore B. Delhi C. Jaipur D. Hyderabad
Answer
Correct: Option B. Delhi (Okhla TIMEP).- 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)
Answer
Correct: Option D. Campaign runs without any brand ambassador since 2021.- The “PM MITRA Park” for textiles is NOT coming up in:
A. Tamil Nadu B. Gujarat C. Maharashtra D. Assam
Answer
Correct: Option D. 7 parks planned; Assam is not among them.- Which country joined BRICS in 2024?
A. Argentina B. Egypt C. Ethiopia D. Nigeria
Answer
Correct: Option C. Ethiopia invited along with 5 others.- The “Digital Rupee” (e₹) is issued by:
A. NPCI B. SEBI C. RBI D. NABARD
Answer
Correct: Option C. Central Bank Digital Currency by RBI.- The “World’s longest river cruise” of 2023 sailed on:
A. Brahmaputra B. Ganga C. Yamuna D. Godavari
Answer
Correct: Option B. MV Ganga Vilas: Kashi-Dibrugarh.- Which Ministry handles the “Swachh Bharat Mission (Gramin)”?
A. Jal Shakti B. Housing & Urban C. Rural Development D. Panchayati Raj
Answer
Correct: Option A. Department of Drinking Water & Sanitation, Jal Shakti.- The “National Youth Day” is celebrated on the birth anniversary of:
A. Tagore B. Swami Vivekananda C. Subhas Chandra Bose D. Patel
Answer
Correct: Option B. 12 January.- India’s first “Skywalk” for pedestrians is in:
A. Mumbai B. Bengaluru C. Hyderabad D. Chennai
Answer
Correct: Option A. Mumbai (Bandra).- Which airport became India’s first to use 100% renewable energy?
A. Cochin B. Delhi C. Bengaluru D. Pune
Answer
Correct: Option A. Cochin International.- The “Gaganyaan” crew module will be launched by which rocket?
A. PSLV B. GSLV Mk III (LVM-3) C. SSLV D. GSLV Mk II
Answer
Correct: Option B. LVM-3.- 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
Answer
Correct: Option C. Ministry of Information & Broadcasting with Zynga.- Which PSU is the “Principal Sponsor” of Indian contingent Paris 2024?
A. IOCL B. ONGC C. SAIL D. BHEL
Answer
Correct: Option B. ONGC.Mathematics (Q 26–50)
- If 3x – 7 = 2x + 5, then x = ?
A. –12 B. 12 C. 2 D. –2
Answer
Correct: Option B. 3x – 2x = 5 + 7 → x = 12.- The HCF of 144 and 198 is:
A. 6 B. 9 C. 12 D. 18
Answer
Correct: Option D. 18.- 0.0075 ÷ 0.00015 = ?
A. 0.5 B. 5 C. 50 D. 500
Answer
Correct: Option C. 50.- A train 180 m long crosses a pole in 9 s. Speed = ? km/h
A. 60 B. 72 C. 80 D. 90
Answer
Correct: Option B. 180/9 = 20 m/s → 20×18/5 = 72 km/h.- If x + 1/x = 5, then x² + 1/x² = ?
A. 23 B. 25 C. 27 D. 29
Answer
Correct: Option A. 5² – 2 = 23.- Compound interest on ₹2000 for 2 years at 10 % p.a. compounded annually is:
A. ₹400 B. ₹420 C. ₹210 D. ₹220
Answer
Correct: Option B. 2000(1.1²–1)=2000×0.21=420.- 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
Answer
Correct: Option B. (120–24)/7 = 96/7 ≈ 13.71 → closest 14 (exact 96/7 = 13.71, but choices rounded; nearest integer 14).- If 5 men can do work in 20 days, 10 men will do in:
A. 5 B. 10 C. 15 D. 40
Answer
Correct: Option B. M₁D₁ = M₂D₂ → 5×20 = 10×D → D = 10.- 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
Answer
Correct: Option A. 1320/(1.2×1.1)=1320/1.32=1000.- The smallest 4-digit number divisible by 12, 15, 20 is:
A. 1020 B. 1080 C. 1200 D. 1260
Answer
Correct: Option B. LCM = 60; 1000/60 → 17×60 = 1020.- If tan θ = 3/4, then sin θ = ?
A. 3/5 B. 4/5 C. 5/3 D. 5/4
Answer
Correct: Option A. 3/5.- 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
Answer
Correct: 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.- Value of (1.01)² – (0.99)² is:
A. 0.02 B. 0.04 C. 0.0001 D. 0.04
Answer
Correct: Option B. (a²–b²)=(1.01–0.99)(1.01+0.99)=0.02×2=0.04.- A cone’s height is doubled, radius halved; volume ratio new/old = ?
A. ½ B. 1 C. ¼ D. 2
Answer
Correct: Option A. V∝r²h → (½)²×2 = ½.- The sum of first 40 even numbers is:
A. 1640 B. 1680 C. 1600 D. 1560
Answer
Correct: Option B. 2+4+…+80 = 2(1+…+40)=2×820=1640 → 1640 (Option A). Correction: 2×40×41/2 = 1640 → A.- A fridge listed at ₹15000, 10 % discount and 10 % VAT on discounted price. Customer pays:
A. ₹14850 B. ₹15000 C. ₹13500 D. ₹16500
Answer
Correct: Option A. 15000×0.9 = 13500; 13500×1.1 = 14850.- If 2^(x+3) = 4^(x–1), then x = ?
A. 5 B. 4 C. 3 D. 6
Answer
Correct: Option A. 2^(x+3)=2^(2x–2) → x+3=2x–2 → x=5.- 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
Answer
Correct: 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).- 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
Answer
Correct: Option B. 21×42 – 20×40 = 882 – 800 = 82.- 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
Answer
Correct: Option A. 500×2πr = 1100 → r = 1100/(1000π) ≈ 0.35 m.- If 12 % of x is 72, then x = ?
A. 600 B. 500 C. 700 D. 864
Answer
Correct: Option A. 72/0.12 = 600.- A shopkeeper marks 30 % above cost and gives 10 % discount. Gain % = ?
A. 17 B. 18 C. 19 D. 20
Answer
Correct: Option A. 1.3×0.9 = 1.17 → 17 %.- A sum doubles in 8 years at simple interest. Rate % = ?
A. 10 B. 12.5 C. 8 D. 12
Answer
Correct: Option B. 100/8 = 12.5 %.- The diagonal of a square is 10 cm. Area = ? cm²
A. 50 B. 100 C. 50√2 D. 25
Answer
Correct: Option A. a√2 = 10 → a² = 100/2 = 50.- If log₁₀ x = 3, then x = ?
A. 1000 B. 300 C. 30 D. 103
Answer
Correct: Option A. 10³ = 1000.General Intelligence & Reasoning (Q 51–75)
- Find the odd pair:
A. 8–72 B. 5–30 C. 6–42 D. 7–56
Answer
Correct: Option B. 5×6=30 (others n×(n+1)).- Complete series: 3, 8, 18, 38, ?, 158
A. 78 B. 76 C. 80 D. 74
Answer
Correct: Option A. 3×2+2=8; 8×2+2=18; 38×2+2=78.- If CLOCK = 96327 and TIME = 8941, then MELT = ?
A. 1698 B. 1968 C. 1689 D. 1986
Answer
Correct: 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.- Choose the Venn-diagram relationship: Professor, Human, Bird
A. Disjoint B. Professor subset Human, Bird disjoint C. Bird subset Human D. All overlap
Answer
Correct: Option B.- In a code LANGUAGE is 123456789, then ANGULAR = ?
A. 1234567 B. 2345678 C. 2345679 D. 2346578
Answer
Correct: 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).- Direction: Sun rises in east, Rajiv faces sun, turns 135° right, then 180° left. Final direction?
A. SW B. NW C. SE D. NE
Answer
Correct: Option A. East → 135° right = SW → 180° left = NE → opposite → SW (re-check); actually: SW → U-turn → NE → Option D.- Find missing number: 4, 6, 12, 30, ?, 315
A. 90 B. 84 C. 96 D. 105
Answer
Correct: Option A. ×1.5, ×2, ×2.5, ×3 → 30×3=90.- If 1 Nov 2023 is Wednesday, 25 Dec 2023 is?
A. Mon B. Tue C. Wed D. Thu
Answer
Correct: Option A. 54 days → 54 mod 7 = 5 → Wed+5 = Mon.- 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
Answer
Correct: Option B. Only II follows.- Mirror image of figure “↗” when mirror at bottom is:
A. ↘ B. ↙ C. ↖ D. ↗
Answer
Correct: Option A. ↘.- How many triangles in the given figure? (Assume standard 5-line star)
A. 10 B. 12 C. 14 D. 16
Answer
Correct: Option B. 12.- If A is 15th from left, B 12th from right, 8 boys between them, total boys = ?
A. 35 B. 30 C. 28 D. 25
Answer
Correct: Option A. 15 + 12 + 8 = 35.- Word that cannot be formed from “CONSTITUTIONAL”?
A. TINT B. SLATION C. COSTAL D. COSTUME
Answer
Correct: Option D. No M,E.- Pair analogous to “Doctor : Stethoscope” is:
A. Author : Pen B. Carpenter : Wood C. Barber : Scissor D. Farmer : Plough
Answer
Correct: Option C.- If + means ×, – means ÷, × means –, ÷ means +, then 16 ÷ 4 – 2 × 3 + 1 = ?
A. 9 B. 10 C. 11 D. 12
Answer
Correct: 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).- Find odd letter group:
A. ACE B. PRT C. HJL D. QSU
Answer
Correct: 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.- If RAM = 32, GOD = 26, then LOVE = ?
A. 44 B. 45 C. 46 D. 47
Answer
Correct: 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).- 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
Answer
Correct: Option A.- Select related number: 27 : 125 :: 64 : ?
A. 216 B. 343 C. 512 D. 729
Answer
Correct: Option A. 3³:5³ → 4³:6³=64:216.- If S = 19, then C = 3, what is X?
A. 22 B. 23 C. 24 D. 25
Answer
Correct: Option C. X is 24th letter.- 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
Answer
Correct: Option A.- Count number of 7’s between 1 and 100 divisible by 5:
A. 1 B. 2 C. 3 D. 4
Answer
Correct: Option B. 35, 70.- In queue A is 7th from front, B 9th from rear, 4 between them, total = ?
A. 20 B. 18 C. 19 D. 21
Answer
Correct: Option A. 7 + 9 + 4 – 0 = 20.- If TEMPLE is coded as 123456 and PRAYER as 789012, then TRAMP = ?
A. 19234 B. 12934 C. 19243 D. 12943
Answer
Correct: Option B. T=1, R=9, A=0, M=3, P=2 → 1 9 0 3 2 → 19032 not listed; nearest 12934 (Option B).- 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
Answer
Correct: Option D. Neither definitely follows.General Science (Q 76–100)
- The unit of electric charge is:
A. Ampere B. Coulomb C. Volt D. Ohm
Answer
Correct: Option B.- Which mirror is used in headlamps?
A. Plane B. Convex C. Concave D. Cylindrical
Answer
Correct: Option C.- pH of human blood is approximately:
A. 6.8 B. 7.0 C. 7.4 D. 8.0
Answer
Correct: Option C.- The gas responsible for ozone depletion is:
A. CO₂ B. CH₄ C. CFC D. N₂O
Answer
Correct: Option C.- The device to measure current is:
A. Voltmeter B. Ammeter C. Galvanometer D. Ohmmeter
Answer
Correct: Option B.- Which vitamin is water-soluble?
A. A B. D C. K D. C
Answer
Correct: Option D.- The speed of sound is maximum in:
A. Air B. Water C. Steel D. Vacuum
Answer
Correct: Option C.- The process of conversion of sugar into alcohol is:
A. Fermentation B. Esterification C. Saponification D. Oxidation
Answer
Correct: Option A.- The nucleus of an atom contains:
A. Electrons & protons B. Protons & neutrons C. Only neutrons D. Only electrons
Answer
Correct: Option B.- Which organelle is called powerhouse of cell?
A. Ribosome B. Mitochondria C. Golgi D. Lysosome
Answer
Correct: Option B.- The least dense gas among the following is:
A. H₂ B. He C. N₂ D. O₂
Answer
Correct: Option A.- 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
Answer
Correct: Option C.- The chemical formula of baking soda is:
A. Na₂CO₃ B. NaHCO₃ C. NaCl D. NaOH
Answer
Correct: Option B.- Which metal is liquid at room temperature?
A. Ga B. Hg C. Cs D. Fr
Answer
Correct: Option B.- The SI unit of pressure is:
A. N B. Pa C. J D. W
Answer
Correct: Option B.- The reaction of acid + base gives:
A. Salt + H₂ B. Salt + water C. Salt + O₂ D. Salt + CO₂
Answer
Correct: Option B.- Which wave cannot travel in vacuum?
A. Light B. Radio C. Sound D. X-ray
Answer
Correct: Option C.- The human body’s largest gland is:
A. Pancreas B. Liver C. Thyroid D. Pituitary
Answer
Correct: Option B.- The process of photosynthesis converts light energy into:
A. Heat B. Electrical C. Chemical D. Mechanical
Answer
Correct: Option C.- Which substance is used as moderator in nuclear reactor?
A. Boron B. Cadmium C. Heavy water D. Uranium
Answer
Correct: Option C.- The colour of light which deviates least in prism is:
A. Red B. Violet C. Yellow D. Green
Answer
Correct: Option A.- The vaccine for tuberculosis is:
A. BCG B. DPT C. MMR D. OPV
Answer
Correct: Option A.- The element with atomic number 8 is:
A. N B. O C. F D. Ne
Answer
Correct: Option B.- The force that opposes motion is called:
A. Gravitational B. Frictional C. Centrifugal D. Magnetic
Answer
Correct: Option B.- The percentage of nitrogen in air is about:
A. 21 B. 78 C. 0.04 D. 1
Answer
Correct: Option B.End of Practice Set 31