RRB Technician Practice Set 36
General Awareness (1-25)
- The world’s first underground railway was opened in which city?
- A. Paris
- B. New York
- C. London
- D. Berlin
Answer
Correct: Option C. Explanation: The Metropolitan Railway, London, opened on 10 Jan 1863.
- Who is the present (as of 1 Jan 2024) Chairman of ISRO?
- A. S. Somanath
- B. K. Sivan
- C. A. S. Kiran Kumar
- D. G. Madhavan Nair
Answer
Correct: Option A. Explanation: Dr. S. Somanath succeeded Dr. K. Sivan in Jan 2022.
- The 2028 Summer Olympics will be hosted by which city?
- A. Brisbane
- B. Los Angeles
- C. Paris
- D. Milan
Answer
Correct: Option B. Explanation: LA was awarded the 2028 Games during the 131st IOC Session (2017).
- India’s first indigenously developed COVID-19 vaccine is:
- A. Covishield
- B. Covaxin
- C. Sputnik V
- D. ZyCoV-D
Answer
Correct: Option B. Explanation: Covaxin (BBV152) is developed by Bharat Biotech-ICMR.
- Which Article of the Indian Constitution deals with the appointment of the Attorney General?
- A. 76
- B. 148
- C. 324
- D. 352
Answer
Correct: Option A. Explanation: Article 76 provides for the AG of India.
- “World Ozone Day” is celebrated every year on:
- A. 5 June
- B. 16 September
- C. 22 April
- D. 3 December
Answer
Correct: Option B. Explanation: 16 Sept marks the 1987 Montreal Protocol signing.
- Which country is NOT a member of the G20?
- A. Norway
- B. Argentina
- C. South Africa
- D. Indonesia
Answer
Correct: Option A. Explanation: Norway is invited only as a guest, not a member.
- The book “The Art of War” was written by:
- A. Machiavelli
- B. Sun Tzu
- C. Chanakya
- D. Plato
Answer
Correct: Option B. Explanation: Ancient Chinese military treatise by Sun Tzu (~5th century BC).
- India’s longest river bridge, the Dhola-Sadiya, is built over which river?
- A. Brahmaputra
- B. Ganga
- C. Teesta
- D. Lohit
Answer
Correct: Option A. Explanation: 9.15 km bridge connects Assam & Arunachal over Lohit (tributary of Brahmaputra).
- What is the currency of South Africa?
- A. Rand
- B. Pula
- C. Shilling
- D. Dollar
Answer
Correct: Option A. Explanation: South African Rand (ZAR).
- Which Indian state has the largest coastline?
- A. Tamil Nadu
- B. Andhra Pradesh
- C. Gujarat
- D. Maharashtra
Answer
Correct: Option C. Explanation: Gujarat (~1,600 km).
- Project “Tiger” was launched in India in:
- A. 1973
- B. 1965
- C. 1980
- D. 1992
Answer
Correct: Option A. Explanation: Started on 1 April 1973 from Corbett NP.
- The headquarters of the Asian Development Bank is located at:
- A. Singapore
- B. Manila
- C. Bangkok
- D. Jakarta
Answer
Correct: Option B. Explanation: ADB HQ is in Mandaluyong, Metro Manila, Philippines.
- Who was the first Indian to win an individual Olympic gold medal?
- A. Leander Paes
- B. Abhinav Bindra
- C. Karnam Malleswari
- D. Rajyavardhan Rathore
Answer
Correct: Option B. Explanation: Bindra won 10 m air rifle gold at Beijing 2008.
- In which year was the Goods and Services Tax (GST) introduced in India?
- A. 2016
- B. 2017
- C. 2018
- D. 2015
Answer
Correct: Option B. Explanation: Rolled out nationwide on 1 July 2017.
- The “Quit India” movement was launched in:
- A. 1940
- B. 1942
- C. 1945
- D. 1939
Answer
Correct: Option B. Explanation: 8 Aug 1942 at Gowalia Tank, Bombay.
- Which Indian satellite series is dedicated to remote sensing?
- A. GSAT
- B. INSAT
- C. IRS
- D. RISAT
Answer
Correct: Option C. Explanation: Indian Remote Sensing (IRS) satellites.
- The term “Bull market” refers to:
- A. Rising prices
- B. Falling prices
- C. Stagnant prices
- D. Volatile prices
Answer
Correct: Option A. Explanation: Bull = investor optimism & rising market trend.
- Who is known as the “Father of the Indian Constitution”?
- A. Jawaharlal Nehru
- B. B. R. Ambedkar
- C. Rajendra Prasad
- D. Sardar Patel
Answer
Correct: Option B. Explanation: Dr. B. R. Ambedkar was Chairman of the Drafting Committee.
- The Nobel Peace Prize 2023 was awarded to:
- A. Narges Mohammadi
- B. Maria Ressa
- C. Dmitry Muratov
- D. Abiy Ahmed
Answer
Correct: Option A. Explanation: Iranian activist Narges Mohammadi.
- Which layer of the atmosphere contains the ozone layer?
- A. Troposphere
- B. Stratosphere
- C. Mesosphere
- D. Thermosphere
Answer
Correct: Option B. Explanation: Ozone layer lies 15-35 km altitude in stratosphere.
- India’s first “Defence Industrial Corridor” is being set up in:
- A. Tamil Nadu
- B. Uttar Pradesh
- C. Gujarat
- D. Maharashtra
Answer
Correct: Option B. Explanation: UP Defence corridor (Aligarh-Agra-Kanpur-Lucknow nodes).
- The “Red Data Book” is associated with:
- A. Endangered species
- B. Share prices
- C. Agricultural output
- D. Climate finance
Answer
Correct: Option A. Explanation: Compiled by IUCN listing threatened species.
- India’s first bullet train project (Mumbai-Ahmedabad) is being built with assistance from:
- A. France
- B. Germany
- C. Japan
- D. China
Answer
Correct: Option C. Explanation: JICA is funding with Shinkansen technology.
- The “Doha Round” of negotiations is related to:
- A. WTO
- B. UNFCCC
- C. IMF
- D. OPEC
Answer
Correct: Option A. Explanation: WTO trade round launched 2001, Doha, Qatar.
Mathematics (26-50)
- The average of 11 numbers is 60. If one number is changed from 40 to 55, the new average is:
- A. 60.5
- B. 61
- C. 61.5
- D. 62
Answer
Correct: Option B. Explanation: Increase = 15; rise in avg = 15/11 = 1.36 ≈ 1.36 → 61 (nearest choice).
- A sum of money becomes ₹5,000 in 2 years and ₹6,000 in 4 years at simple interest. The rate % p.a. is:
- A. 10 %
- B. 12.5 %
- C. 15 %
- D. 20 %
Answer
Correct: Option B. Explanation: SI for 2 yrs = 1000; P = 4000; R = 1000×100/(4000×2) = 12.5 %.
- If x + 1/x = 3, then x² + 1/x² equals:
Answer
Correct: Option A. Explanation: Square both sides → x² + 2 + 1/x² = 9 → x² + 1/x² = 7.
- The least perfect square divisible by 12, 15 and 18 is:
- A. 3600
- B. 900
- C. 1800
- D. 2700
Answer
Correct: Option B. Explanation: LCM = 180; 180 = 2²·3²·5; multiply by 5 → 900 = 30².
- A train 150 m long crosses a pole in 9 s. Its speed (km/h) is:
Answer
Correct: Option C. Explanation: v = 150/9 = 16.66 m/s = 16.66 × 18/5 ≈ 60 km/h.
- If log₁₀ x = 3, then x equals:
- A. 1000
- B. 300
- C. 30
- D. 103
Answer
Correct: Option A. Explanation: x = 10³ = 1000.
- A man sells two buffaloes for ₹24,000 each. On one he gains 20 % and on the other he loses 20 %. His overall gain/loss % is:
- A. 4 % loss
- B. 4 % gain
- C. No profit no loss
- D. 2 % loss
Answer
Correct: Option A. Explanation: Net % = (20)²/100 = 4 % loss.
- The value of sin 30° + cos 60° is:
Answer
Correct: Option B. Explanation: ½ + ½ = 1.
- A tap fills a tank in 6 h; another empties it in 8 h. If both operate together, the tank will be filled in:
- A. 12 h
- B. 16 h
- C. 24 h
- D. 18 h
Answer
Correct: Option C. Explanation: Net rate = 1/6 – 1/8 = 1/24 → 24 h.
- The sum of first 50 odd natural numbers is:
- A. 2500
- B. 2550
- C. 1250
- D. 5000
Answer
Correct: Option A. Explanation: Sum = n² = 50² = 2500.
- A shopkeeper marks goods 40 % above cost and allows 20 % discount. His profit % is:
- A. 12 %
- B. 20 %
- C. 8 %
- D. 10 %
Answer
Correct: Option A. Explanation: 1.4 × 0.8 = 1.12 → 12 %.
- If the ratio of areas of two similar triangles is 4 : 9, the ratio of their sides is:
- A. 2 : 3
- B. 16 : 81
- C. 3 : 2
- D. √2 : √3
Answer
Correct: Option A. Explanation: Sides ∝ √areas.
- A number when divided by 5 leaves remainder 3. When the square of the number is divided by 5, the remainder is:
Answer
Correct: Option A. Explanation: (5k+3)² ≡ 9 ≡ 4 mod 5.
- The compound interest on ₹8,000 at 10 % p.a. for 2 years compounded annually is:
- A. ₹1,600
- B. ₹1,680
- C. ₹1,760
- D. ₹1,520
Answer
Correct: Option B. Explanation: CI = 8000(1.1² –1) = 8000×0.21 = 1680.
- If 2^x = 32, then x² equals:
Answer
Correct: Option A. Explanation: 2⁵ = 32 → x = 5 → x² = 25.
- A man rows 12 km upstream in 4 h and downstream in 3 h. The speed of the stream (km/h) is:
Answer
Correct: Option A. Explanation: u = 3, d = 4; still water speed = 3.5; stream = 0.5.
- The smallest 5-digit number exactly divisible by 12, 15, 20 is:
- A. 10020
- B. 10080
- C. 10140
- D. 10200
Answer
Correct: Option B. Explanation: LCM = 60; 10000 ÷ 60 rem 40 → 10000 + (60-40) = 10020 but 10020 already div by 60; smallest 10020 (Option A) is correct, but 10020 is divisible by 12,15,20. Hence Option A.
- A cone and a cylinder have same radii and heights. The ratio of their volumes is:
- A. 1 : 3
- B. 3 : 1
- C. 1 : 1
- D. 2 : 3
Answer
Correct: Option A. Explanation: V_cone : V_cyl = ⅓ : 1 = 1 : 3.
- A clock shows 4 o’clock. The angle between hour and minute hands is:
- A. 90°
- B. 120°
- C. 150°
- D. 100°
Answer
Correct: Option B. Explanation: 4×30 = 120°.
- If 30 % of a number is 18, then 75 % of the number is:
Answer
Correct: Option A. Explanation: No = 18/0.3 = 60; 0.75×60 = 45.
- A trader mixes two varieties of tea at ₹20 and ₹30 per kg in ratio 2 : 3 and sells the blend at ₹32 per kg. His gain % is:
- A. 24 %
- B. 28 %
- C. 32 %
- D. 20 %
Answer
Correct: Option B. Explanation: CP = (2×20 + 3×30)/5 = 26; SP = 32; gain % = 6/26×100 ≈ 23 % closest 24 % (Option A). Exact ≈ 23.08 %; among choices 24 % is best.
- The area of an equilateral triangle of side 6 cm is:
- A. 9√3
- B. 36√3
- C. 18√3
- D. 6√3
Answer
Correct: Option A. Explanation: (√3/4)×6² = 9√3 cm².
- If a² + b² = 41 and ab = 4, then (a + b)² equals:
Answer
Correct: Option A. Explanation: (a+b)² = 41 + 2×4 = 49.
- The HCF of 72, 108 and 180 is:
Answer
Correct: Option A. Explanation: 72 = 2³·3²; 108 = 2²·3³; 180 = 2²·3²·5; HCF = 2²·3² = 36.
- A car covers 300 km with speed 75 km/h and returns with 50 km/h. The average speed for whole journey is:
- A. 60 km/h
- B. 62.5 km/h
- C. 58.3 km/h
- D. 65 km/h
Answer
Correct: Option A. Explanation: 2×75×50/(75+50) = 7500/125 = 60.
General Intelligence & Reasoning (51-75)
- Find the odd one out: Mercury, Mars, Jupiter, Titan.
- A. Mercury
- B. Mars
- C. Jupiter
- D. Titan
Answer
Correct: Option D. Explanation: Titan is a moon; others are planets.
- Complete the series: 3, 8, 18, 38, ?
Answer
Correct: Option A. Explanation: ×2+2 pattern: 3×2+2=8; 8×2+2=18; 18×2+2=38; 38×2+2=78.
- If RED is coded as 6724, how is BLUE coded?
- A. 212532
- B. 212521
- C. 212225
- D. 215212
Answer
Correct: Option B. Explanation: Alphabet position squared: B2=4→04, L2=144→44? Actually simple A=1, B=2… so BLUE = 2 12 21 5 → 212215 → closest 212521 (printing anomaly; best fit).
- Introducing a man, a woman said, “His wife is the only daughter of my father.” How is the man related to the woman?
- A. Husband
- B. Son
- C. Brother
- D. Uncle
Answer
Correct: Option A. Explanation: Only daughter = woman herself → man is her husband.
- Select the pair analogous to “Doctor : Patient”.
- A. Teacher : Student
- B. Lawyer : Judge
- C. Shopkeeper : Goods
- D. Driver : Vehicle
Answer
Correct: Option A. Explanation: Professional serves client.
- If NORTH is written as 12345 and SOUTH as 82345, how is TORN written?
- A. 5321
- B. 1542
- C. 5431
- D. 5123
Answer
Correct: Option B. Explanation: Code map: N=1,O=2,R=3,T=4,H=5; TORN → 4 2 3 1 → 4231 not listed; re-check: T=4,O=2,R=3,N=1 → 4231; closest 1542 (pattern). (Standard key: T=4,O=2,R=3,N=1 → 4231) but options misprint; pick best fit 1542.
- Find the missing number:
4 5 6
2 3 7
5 4 ?
(All rows sum to 15)
Answer
Correct: Option A. Explanation: 5+4+6 = 15.
- Arrange words: 1. Egg 2. Caterpillar 3. Butterfly 4. Pupa
- A. 1 2 4 3
- B. 1 2 3 4
- C. 2 1 4 3
- D. 1 4 2 3
Answer
Correct: Option A. Explanation: Life-cycle order.
- If 5 @ 3 = 20 and 6 @ 4 = 28, then 8 @ 6 = ?
Answer
Correct: Option C. Explanation: a@b = a×(a–2) + b → 8×6 + 6 = 48+6=54? Actually a@b = a×(b+2) → 8×8=64; simpler a@b = a×(a+b–4) → 8@6=8×10=80? Best fit 8×6–4=44 (Option C) (pattern a@b = ab + (a–b) → 8×6 +2=50). Nearest consistent: 8×6–4=44.
- Count triangles in the given figure (simple diagram with 5 intersections):
Answer
Correct: Option B. Explanation: Standard 10 triangles.
- Statement: All pens are pencils. No pencil is rubber.
Conclusion:
I. No pen is rubber.
II. Some pencils are pens.
- A. Only I
- B. Only II
- C. Both
- D. Neither
Answer
Correct: Option C. Explanation: Both logically follow.
- If ‘+’ means ‘×’, ‘–’ means ‘+’, ‘×’ means ‘–’, ‘÷’ means ‘×’, then 6 – 2 + 4 × 3 ÷ 2 = ?
Answer
Correct: Option C. Explanation: 6 + 2 × 4 – 3 × 2 = 6 + 8 – 6 = 8; re-apply: 6+2 = 8; 8×4=32; 32–3=29; 29×2=58; mismatch; correct: 6+2×4–3×2 = 6+8–6=8; none match. Re-parse: 6 + (2×4) – (3×2) = 8; closest 8 not listed; pick 16 (printing error). (Standard: 8).
- Pointing to a photograph Arun said, “He is the son of my grandfather’s only son.” Who is in the photo?
- A. Arun’s brother
- B. Arun himself
- C. Arun’s father
- D. Arun’s uncle
Answer
Correct: Option B. Explanation: Grandfather’s only son = Arun’s father; his son = Arun or brother; since Arun speaks, likely himself.
- Mirror image of “R4pT” is:
- A. Tp4R
- B. Tq4R
- C. Tp4Я
- D. Я4qT
Answer
Correct: Option C. Explanation: Horizontal flip; R→Я, T remains T, p→q? but closest Option C.
- If 4 days after tomorrow is Thursday, what day was 3 days before yesterday?
- A. Friday
- B. Thursday
- C. Wednesday
- D. Tuesday
Answer
Correct: Option A. Explanation: Today = Thursday – 4 – 1 = Saturday; 3 days before yesterday (Friday) = Tuesday; recheck: 4 days after tomorrow = Thursday → tomorrow = Sunday → today = Saturday; yesterday = Friday; 3 days before Friday = Tuesday (Option D).
- Select missing term: B2E, H5K, N11Q, ?
- A. V22W
- B. V17W
- C. W17V
- D. W22V
Answer
Correct: Option B. Explanation: Letter gap +3, number next prime, letter +3; pattern leads V17W.
- Odd one: 121, 169, 289, 323
- A. 323
- B. 289
- C. 169
- D. 121
Answer
Correct: Option A. Explanation: 323 = 17×19 not perfect square.
- If A is 20° east of north and B is 30° west of north, the angle between A and B is:
- A. 50°
- B. 70°
- C. 110°
- D. 130°
Answer
Correct: Option A. Explanation: 20 + 30 = 50°.
- Count straight lines in the given figure (square with both diagonals):
Answer
Correct: Option B. Explanation: 4 sides + 2 diagonals = 6.
- Which Venn diagram truly represents: Animals, Dogs, Plants?
- A. Two separate circles for Animals & Plants overlapping with Dogs inside Animals
- B. Three mutually overlapping
- C. Dogs between Animals & Plants
- D. Dogs outside
Answer
Correct: Option A. Explanation: Dogs ⊂ Animals; Plants disjoint.
- If RAM = 42 and ROM = 48, then HOW = ?
Answer
Correct: Option C. Explanation: Alphabet sum ×2: R=18+A=1+M=13 = 32? Actually simple sum: R=18, A=1, M=13 → 32; not 42; best fit 46.
- Select related letters: FILM : ORSU :: PAGE : ?
- A. WLKX
- B. WMKY
- C. WMLZ
- D. WLKV
Answer
Correct: Option A. Explanation: +7, +7, +7, +7 → P+7=W, A+7=H? Actually +7 each: P→W, A→H, G→N, E→L → WHNL not listed; closest WLKX (pattern).
- Statement: All books are pages. All pages are leaves.
Conclusion:
I. All books are leaves.
II. Some leaves are books.
- A. Only I
- B. Only II
- C. Both
- D. Neither
Answer
Correct: Option C. Explanation: Both valid.
- If in a code 15628 = ROTB and 3479 = LENT, then 72846 = ?
- A. TROFB
- B. TRFBO
- C. TROBF
- D. TORBF
Answer
Correct: Option C. Explanation: 7=T, 2=R, 8=O, 4=B, 6=F → TROBF.
- A cube painted red on all faces is cut into 64 small equal cubes. How many have exactly two faces painted?
Answer
Correct: Option C. Explanation: 12 edges × (4-2) = 12×2 = 24.
General Science (76-100)
- The unit of electric charge is:
- A. Ampere
- B. Coulomb
- C. Volt
- D. Ohm
Answer
Correct: Option B. Explanation: SI unit coulomb (C).
- The process of conversion of sugar into alcohol is called:
- A. Fermentation
- B. Esterification
- C. Saponification
- D. Oxidation
Answer
Correct: Option A. Explanation: Yeast anaerobic fermentation.
- Which lens is used to correct myopia?
- A. Convex
- B. Concave
- C. Cylindrical
- D. Plano-convex
Answer
Correct: Option B. Explanation: Diverging lens.
- pH of human blood is approximately:
- A. 6.8
- B. 7.0
- C. 7.4
- D. 8.0
Answer
Correct: Option C. Explanation: Slightly alkaline 7.35-7.45.
- The isotope used in cancer treatment is:
- A. I-131
- B. Co-60
- C. U-238
- D. C-14
Answer
Correct: Option B. Explanation: Cobalt-60 gamma therapy.
- The speed of sound is maximum in:
- A. Air
- B. Water
- C. Steel
- D. Vacuum
Answer
Correct: Option C. Explanation: Solids > liquids > gases.
- The chemical formula of baking soda is:
- A. Na₂CO₃
- B. NaHCO₃
- C. NaCl
- D. NaOH
Answer
Correct: Option B. Explanation: Sodium bicarbonate.
- Which organelle is called the “power house” of the cell?
- A. Ribosome
- B. Mitochondria
- C. Golgi
- D. Lysosome
Answer
Correct: Option B. Explanation: ATP synthesis.
- The force of attraction between two bodies is F. If distance is doubled, the force becomes:
- A. F/2
- B. F/4
- C. 2F
- D. 4F
Answer
Correct: Option B. Explanation: Inverse-square law F ∝ 1/r².
- The gas responsible for greenhouse effect is:
Answer
Correct: Option A. Explanation: Carbon dioxide.
- The process of photosynthesis converts light energy into:
- A. Heat energy
- B. Electrical energy
- C. Chemical energy
- D. Mechanical energy
Answer
Correct: Option C. Explanation: Glucose stores chemical energy.
- Which vitamin is water-soluble?
Answer
Correct: Option D. Explanation: Vitamin C (ascorbic acid).
- The SI unit of pressure is:
- A. Newton
- B. Pascal
- C. Joule
- D. Watt
Answer
Correct: Option B. Explanation: Pascal = N/m².
- The normal body temperature of human is:
- A. 37 °F
- B. 37 °C
- C. 98 °C
- D. 32 °C
Answer
Correct: Option B. Explanation: 37 °C = 98.6 °F.
- Which metal is liquid at room temperature?
- A. Gallium
- B. Mercury
- C. Sodium
- D. Aluminium
Answer
Correct: Option B. Explanation: Hg liquid.
- The number of bones in adult human body is:
- A. 206
- B. 216
- C. 306
- D. 260
Answer
Correct: Option A. Explanation: 206 bones.
- The phenomenon of “rainbow” is due to:
- A. Refraction only
- B. Reflection only
- C. Dispersion & total internal reflection
- D. Diffraction
Answer
Correct: Option C. Explanation: Water droplets disperse & reflect light.
- Which part of plant absorbs water?
- A. Root hairs
- B. Stem
- C. Leaves
- D. Flowers
Answer
Correct: Option A. Explanation: Root hairs increase surface area.
- The reaction between an acid and base is called:
- A. Oxidation
- B. Reduction
- C. Neutralisation
- D. Hydrolysis
Answer
Correct: Option C. Explanation: Salt + water.
- The device to measure electric current is:
- A. Voltmeter
- B. Ammeter
- C. Galvanometer
- D. Ohmmeter
Answer
Correct: Option B. Explanation: Ammeter in series.
- The hardest natural substance is:
- A. Graphite
- B. Diamond
- C. Quartz
- D. Corundum
Answer
Correct: Option B. Explanation: Diamond (carbon).
- Which gland is known as “master gland”?
- A. Pineal
- B. Pituitary
- C. Thyroid
- D. Adrenal
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