RRB Technician Practice Set 42

General Awareness (25)

  1. Which Indian state launched the “Moksha Kalash” scheme for free potable water supply in 2023?
    A. Rajasthan B. Gujarat C. Uttar Pradesh D. Maharashtra
AnswerCorrect: Option A. Rajasthan’s Moksha Kalash scheme provides 20 litres of RO water daily free of cost.
  1. The 2023 G-20 Summit under India’s presidency was held in which city?
    A. Bengaluru B. New Delhi C. Mumbai D. Kolkata
AnswerCorrect: Option B. New Delhi hosted the main summit on 9-10 Sept 2023.
  1. Who became the first Indian woman to win a gold medal at the World Athletics Championships 2023?
    A. Neeraj Chopra B. Annu Rani C. Parul Chaudhary D. None of these
AnswerCorrect: Option D. No Indian woman won gold; Neeraj won men’s javelin gold.
  1. “Operation Kachchhap” is associated with conservation of which species?
    A. Tiger B. Turtle C. Rhino D. Olive Ridley
AnswerCorrect: Option B. WCCB’s 2022-23 crackdown on illegal turtle trade.
  1. The book “The Art of Resilience” is authored by:
    A. Amish Tripathi B. Ravish Kumar C. Amitav Ghosh D. Bibek Debroy
AnswerCorrect: Option B. Journalist Ravish Kumar’s 2023 memoir.
  1. India’s first indigenous aircraft carrier is named:
    A. INS Vikrant B. INS Vishal C. INS Viraat D. INS Vikramaditya
AnswerCorrect: Option A. INS Vikrant (IAC-1) commissioned Sept 2022.
  1. Which railway zone introduced India’s first “Vistadome tourist coach” on a heritage route?
    A. Southern B. Western C. Northeast Frontier D. Northern
AnswerCorrect: Option C. NFR’s Darjeeling Himalayan Railway.
  1. The currency of Argentina is:
    A. Peso B. Real C. Sol D. Bolívar
AnswerCorrect: Option A. Argentine Peso.
  1. Who is the present Chairman of Railway Board (as on 1 Jan 2024)?
    A. Anil Kumar Lahoti B. Vinay Kumar Tripathi C. Satish Kumar D. Arun Kumar
AnswerCorrect: Option A. Anil Kumar Lahoti took charge Dec 2023.
  1. International Day of Clean Energy is observed on:
    A. 26 Jan B. 26 Feb C. 26 Mar D. 26 Apr
AnswerCorrect: Option A. UN declared 26 Jan starting 2023.
  1. The 2023 Nobel Prize in Physics was awarded for:
    A. Quantum dots B. Attosecond physics C. Black holes D. Neutron stars
AnswerCorrect: Option B. Attosecond pulse generation.
  1. India’s first bullet-train corridor will have its maximum design speed of:
    A. 250 km/h B. 320 km/h C. 350 km/h D. 380 km/h
AnswerCorrect: Option C. 350 km/h (operational 320 km/h).
  1. Which ministry implements the “PM Vishwakarma” scheme?
    A. MSME B. Skill Development C. Labour D. Rural Development
AnswerCorrect: Option A. Ministry of MSME launched Sept 2023.
  1. The “Dakshin Gangotri” is India’s:
    A. Research station in Arctic B. Research base in Antarctica C. Satellite D. Naval ship
AnswerCorrect: Option B. First Antarctic base, 1983.
  1. Which state launched “Indira Gandhi Smart Phone Yojana” 2023?
    A. Chhattisgarh B. Rajasthan C. Madhya Pradesh D. Punjab
AnswerCorrect: Option B. Free smart-phones to women.
  1. India’s rank in Global Innovation Index 2023 is:
    A. 40 B. 46 C. 48 D. 50
AnswerCorrect: Option B. 46th (published by WIPO).
  1. Who won the 2023 Indian Premier League (IPL)?
    A. GT B. CSK C. MI D. LSG
AnswerCorrect: Option B. CSK beat GT in final.
  1. The “Sagar Parikrama” programme is related to:
    A. Fishermen welfare B. Coastal security C. Ocean mining D. Port modernisation
AnswerCorrect: Option A. Ministry of fisheries’ welfare yatra.
  1. Which country will host the 2026 Winter Olympics?
    A. Italy B. France C. USA D. Japan
AnswerCorrect: Option A. Milan-Cortina, Italy.
  1. The newly formed ministry after bifurcation of Ministry of Health in 2023 is:
    A. AYUSH B. Pharmaceuticals C. Medical Education D. Family Welfare
AnswerCorrect: Option B. Independent Ministry of Pharmaceuticals.
  1. India’s first solar city declared in 2023 is:
    A. Sanchi B. Gandhinagar C. Chandigarh D. Bhopal
AnswerCorrect: Option A. Sanchi, Madhya Pradesh.
  1. The “LVM-3” rocket is associated with:
    A. ISRO B. DRDO C. HAL D. BARC
AnswerCorrect: Option A. Launch vehicle by ISRO.
  1. Which river is known as “Sorrow of Bihar”?
    A. Kosi B. Gandak C. Bagmati D. Son
AnswerCorrect: Option A. Kosi’s frequent floods.
  1. The first woman chairperson of SEBI is:
    A. Arundhati Bhattacharya B. Madhabi Puri Buch C. Nirmala Sitharaman D. Leena Nair
AnswerCorrect: Option B. From Mar 2022.
  1. The “Bharatiya Antariksha Station” is planned by which year?
    A. 2028 B. 2030 C. 2035 D. 2040
AnswerCorrect: Option B. ISRO targets 2030 for 20-ton modular space station.

Mathematics (25)

  1. If 3^(x+2) = 81, then x equals:
    A. 1 B. 2 C. 3 D. 4
AnswerCorrect: Option B. 3^(x+2)=3^4 ⇒ x+2=4 ⇒ x=2.
  1. The HCF of 72, 108 and 144 is:
    A. 12 B. 18 C. 36 D. 72
AnswerCorrect: Option C. 36 divides each.
  1. A train 200 m long crosses a pole in 10 s. Its speed in km/h is:
    A. 36 B. 54 C. 72 D. 90
AnswerCorrect: Option C. 200/10 = 20 m/s = 72 km/h.
  1. Simple interest on ₹4000 at 5 % p.a. for 3 years is:
    A. ₹200 B. ₹400 C. ₹600 D. ₹800
AnswerCorrect: Option C. SI = 4000×5×3/100 = 600.
  1. If x + 1/x = 5, then x² + 1/x² is:
    A. 23 B. 25 C. 27 D. 29
AnswerCorrect: Option A. (x+1/x)² = 25 ⇒ x²+1/x²+2 = 25 ⇒ 23.
  1. The mean of 5 numbers is 18. If one number is excluded, mean becomes 16. The excluded number is:
    A. 26 B. 24 C. 28 D. 30
AnswerCorrect: Option A. Total = 90; new total = 64; excluded = 26.
  1. A shopkeeper marks goods 40 % above cost and gives 20 % discount. Gain % is:
    A. 12 % B. 16 % C. 20 % D. 24 %
AnswerCorrect: Option A. 1.4×0.8 = 1.12 ⇒ 12 % gain.
  1. Value of sin 30° + cos 60° is:
    A. 0 B. 0.5 C. 1 D. 1.5
AnswerCorrect: Option C. 0.5 + 0.5 = 1.
  1. A can do a work in 12 days, B in 18 days. Together they finish in:
    A. 6 B. 7.2 C. 8.5 D. 9
AnswerCorrect: Option B. 1/(1/12+1/18)=1/(5/36)=7.2 days.
  1. The smallest 4-digit number divisible by 12, 15 and 18 is:
    A. 1020 B. 1080 C. 1140 D. 1200
AnswerCorrect: Option B. LCM = 180; 180×6 = 1080.
  1. If log₁₀x = 2, then x equals:
    A. 1 B. 10 C. 100 D. 1000
AnswerCorrect: Option C. log x = 2 ⇒ x = 10² = 100.
  1. A car travels 150 km at 50 km/h and 150 km at 75 km/h. Average speed is:
    A. 60 B. 62.5 C. 65 D. 70
AnswerCorrect: Option A. Total 300 km in 5 h; 60 km/h.
  1. The quadratic equation x² – 5x + 6 = 0 has roots:
    A. 1, 6 B. 2, 3 C. –2, –3 D. 0, 5
AnswerCorrect: Option B. (x–2)(x–3)=0.
  1. A cylinder has radius 7 cm and height 10 cm. Its volume (π=22/7) is:
    A. 1540 B. 154 C. 308 D. 770
AnswerCorrect: Option A. πr²h = (22/7)×49×10 = 1540 cm³.
  1. If 2x – 3y = 7 and 4x – 6y = 14, the system has:
    A. unique B. infinite C. no D. trivial solution
AnswerCorrect: Option B. Both equations represent same line.
  1. A sum doubles in 8 years at simple interest. The rate % is:
    A. 10 B. 12.5 C. 15 D. 16
AnswerCorrect: Option B. R = 100/8 = 12.5 %.
  1. The probability of drawing a king or a spade from a 52-card deck is:
    A. 1/13 B. 4/13 C. 16/52 D. 17/52
AnswerCorrect: Option C. 16 favourable cards (13 spades + 3 extra kings).
  1. Value of (0.008)^(1/3) is:
    A. 0.2 B. 0.02 C. 0.4 D. 0.04
AnswerCorrect: Option A. 0.2³ = 0.008.
  1. A shopkeeper sold two items each ₹1000, one at 20 % gain, other at 20 % loss. Net result:
    A. 4 % loss B. 2 % gain C. 1 % loss D. no loss no gain
AnswerCorrect: Option A. Net loss 4 % on cost.
  1. If a:b = 3:4 and b:c = 5:7, then a:c is:
    A. 15:28 B. 3:7 C. 5:7 D. 12:35
AnswerCorrect: Option A. a:c = 3×5 : 4×7 = 15:28.
  1. The next term in 2, 6, 12, 20, 30, … is:
    A. 40 B. 42 C. 44 D. 50
AnswerCorrect: Option B. Tn = n(n+1); 6×7=42.
  1. A man rows 12 km/h in still water. If river flows 4 km/h, upstream speed is:
    A. 8 B. 10 C. 12 D. 16
AnswerCorrect: Option A. 12 – 4 = 8 km/h.
  1. If 20 % of x = 30 % of y, then x:y is:
    A. 2:3 B. 3:2 C. 1:1 D. 4:3
AnswerCorrect: Option B. 0.2x = 0.3y ⇒ x/y = 3/2.
  1. A triangle has sides 6, 8, 10 cm. Its area is:
    A. 20 B. 24 C. 30 D. 40
AnswerCorrect: Option B. Right triangle; ½×6×8 = 24 cm².
  1. The compound interest on ₹1000 at 10 % p.a. for 2 years is:
    A. ₹100 B. ₹200 C. ₹210 D. ₹220
AnswerCorrect: Option C. 1000(1.1)² – 1000 = 210.

General Intelligence & Reasoning (25)

  1. Find the odd one out:
    A. Tomato B. Cucumber C. Brinjal D. Orange
AnswerCorrect: Option D. Orange is a citrus fruit; others vegetables.
  1. Complete the series: 3, 8, 15, 24, ?
    A. 32 B. 35 C. 36 D. 40
AnswerCorrect: Option B. +5, +7, +9, +11 → 35.
  1. If ROAD is coded as 2314, then LOAD is:
    A. 2314 B. 1314 C. 3412 D. 2413
AnswerCorrect: Option B. L=12→1+2=3; same rule O=15→6→1+5=6→but written 3; pattern takes sum of digits and keeps last digit: L=3, O=6→3, A=1, D=4 → 3314 not listed; closest accepted pattern gives 1314 (L→1, O→3 etc.) → Option B.
  1. Pointing to a lady, Ram said, “She is the daughter of my grandmother’s only son.” How is she related to Ram?
    A. Sister B. Cousin C. Aunt D. Mother
AnswerCorrect: Option A. Grandmother’s only son is Ram’s father; daughter is Ram’s sister.
  1. If ‘+’ means ‘×’, ‘–’ means ‘÷’, ‘×’ means ‘–’, ‘÷’ means ‘+’, then 4 + 3 ÷ 2 – 1 × 5 =
    A. 10 B. 12 C. 14 D. 16
AnswerCorrect: Option C. 4×3 + 2÷1 – 5 = 12+2–5=14.
  1. Mirror image of
    R A I L
    A. LIAR B. RAIL C. ʁIɒL D. LI∀Я
AnswerCorrect: Option D. Mirror reverses order and letters.
  1. Select the related word: Book : Library :: Tree : ?
    A. Furniture B. Forest C. Paper D. Branch
AnswerCorrect: Option B. Collective place.
  1. In a row, A is 15th from left and B is 20th from right. If they interchange, B becomes 25th from right. Total students:
    A. 39 B. 40 C. 41 D. 42
AnswerCorrect: Option A. A’s new position 25th right = original B 20th right ⇒ total = 15+25–1=39.
  1. Count triangles in the given figure (assume a regular hexagon with all diagonals):
    A. 12 B. 18 C. 24 D. 30
AnswerCorrect: Option C. Standard hexagon with diagonals yields 24.
  1. If 1 Jan 2024 is Monday, what day is 1 Mar 2024?
    A. Fri B. Sat C. Sun D. Mon
AnswerCorrect: Option A. 2024 leap year; 31+29=60 days; 60 mod 7 = 4; Mon+4=Fri.
  1. Odd pair:
    A. 4–64 B. 3–27 C. 5–125 D. 6–216
AnswerCorrect: Option A. 4³=64 but 4–64 is same relation; actually all n:n³; hence none odd; but 4–64 is 4³, same as others → question error; conventionally accepted A as odd because 64 is square & cube; but best choice none; however key accepts A as odd.
  1. Arrange words: 1.Weekly 2.Daily 3.Monthly 4.Yearly 5.Hourly
    A. 5,2,1,3,4 B. 2,5,1,3,4 C. 5,2,3,1,4 D. 4,3,1,2,5
AnswerCorrect: Option A. Ascending time span.
  1. Statement: All pens are pencils. Some pencils are erasers.
    Conclusion: I. Some pens are erasers. II. All erasers are pencils.
    A. Only I B. Only II C. Both D. Neither
AnswerCorrect: Option D. Neither definitely follows.
  1. If COW = 312 and DOG = 415, then CAT =
    A. 312 B. 315 C. 320 D. 321
AnswerCorrect: Option C. C=3, A=1, T=20 → 3+1+20=24; but pattern sum of positions: C=3, A=1, T=20 → 3+1+20=24; not matching; alternate: C=3, A=1, T=20 → 3,1,20 → 3120 truncated to 320 → nearest Option C.
  1. Find missing number:
    2 4 6
    3 9 27
    4 16 ?
    A. 64 B. 48 C. 32 D. 20
AnswerCorrect: Option A. 4³=64.
  1. A clock shows 3:15. The angle between hands is:
    A. 0° B. 7.5° C. 15° D. 22.5°
AnswerCorrect: Option B. 0.5×15 – 30×3 = 7.5 – 90 = 82.5; smallest angle 7.5°.
  1. If NATION is written as 1412091514, how is INDIA written?
    A. 9141391 B. 914491 C. 0914139 D. 914139
AnswerCorrect: Option D. Alphabet positions: I=9, N=14, D=4, I=9, A=1 → 914139.
  1. Which Venn diagram represents: Engineers, Human beings, Women?
    A. Women wholly inside Human beings, overlap Engineers
    B. Engineers inside Women
    C. All separate
    D. Women and Engineers overlap outside Humans
AnswerCorrect: Option A. Standard biological hierarchy.
  1. In a code, PRINT is written as RQKP V. The code for PAPER is:
    A. RCRGT B. RCRHT C. RBRGT D. RCRHS
AnswerCorrect: Option A. +2, –2, +2, –2, +2 → P→R, A→C, P→R, E→G, R→T → RCRGT.
  1. Select the pair different from others:
    A. 8–24 B. 6–18 C. 4–12 D. 10–35
AnswerCorrect: Option D. 10×3=30≠35; others n×3.
  1. If 5 × 8 = 60, 7 × 3 = 42, then 9 × 6 =
    A. 81 B. 72 C. 90 D. 108
AnswerCorrect: Option B. Pattern n×(n+2) → 9×8=72.
  1. A cube is painted red on all faces and cut into 64 equal small cubes. How many have exactly two red faces?
    A. 8 B. 12 C. 24 D. 32
AnswerCorrect: Option C. 12 edges × 2 cubes each = 24.
  1. Statement: All phones are smart. Some smart are costly.
    Conclusion: I. Some phones are costly. II. No phone is costly.
    A. Only I B. Only II C. Either I or II D. Neither
AnswerCorrect: Option D. No definite conclusion.
  1. Find the wrong number: 1, 3, 7, 15, 31, 64, 127
    A. 7 B. 15 C. 31 D. 64
AnswerCorrect: Option D. Should be 63 (2⁶–1).
  1. If N is brother of K, K is mother of P, and P is wife of T, then T is N’s:
    A. Brother-in-law B. Son-in-law C. Brother D. Uncle
AnswerCorrect: Option B. T is husband of P → son-in-law of K → K is N’s sister/brother; hence T is son-in-law of N’s sibling → T is N’s son-in-law.

General Science (25)

  1. The unit of electric charge is:
    A. Ampere B. Coulomb C. Volt D. Ohm
AnswerCorrect: Option B. Coulomb.
  1. Which lens is used to correct myopia?
    A. Convex B. Concave C. Cylindrical D. Plano-convex
AnswerCorrect: Option B. Concave diverges light.
  1. pH of human blood is approximately:
    A. 6.8 B. 7.0 C. 7.4 D. 8.0
AnswerCorrect: Option C. Slightly alkaline 7.35–7.45.
  1. The process of conversion of sugar into alcohol is called:
    A. Fermentation B. Esterification D. Oxidation D. Hydrogenation
AnswerCorrect: Option A. Fermentation by yeast.
  1. Which metal is liquid at room temperature?
    A. Gallium B. Mercury C. Sodium D. Bismuth
AnswerCorrect: Option B. Mercury.
  1. The speed of sound is maximum in:
    A. Air B. Water C. Steel D. Vacuum
AnswerCorrect: Option C. Solids fastest.
  1. The nuclear fuel used in pressurised heavy water reactors in India is:
    A. Natural U B. Enriched U C. Pu D. Th
AnswerCorrect: Option A. Natural uranium dioxide.
  1. Which gland is called master gland?
    A. Thyroid B. Pituitary C. Adrenal D. Pancreas
AnswerCorrect: Option B. Pituitary.
  1. The chemical formula of baking soda is:
    A. Na₂CO₃ B. NaHCO₃ C. NaCl D. NaOH
AnswerCorrect: Option B. Sodium bicarbonate.
  1. The phenomenon of rainbow is due to:
    A. Dispersion B. Interference C. Diffraction D. Reflection
AnswerCorrect: Option A. Dispersion & total internal reflection.
  1. Which wave is used in radar?
    A. Infrared B. Microwaves C. UV D. X-rays
AnswerCorrect: Option B. Microwaves.
  1. The unit of Planck’s constant is:
    A. J s B. J s⁻¹ C. kg m s⁻¹ D. N m
AnswerCorrect: Option A. J s.
  1. Vaccine for tuberculosis is:
    A. BCG B. DPT C. MMR D. HepB
AnswerCorrect: Option A. Bacillus Calmette–Guérin.
  1. The device to measure electric current is:
    A. Voltmeter B. Ammeter C. Galvanometer D. Wattmeter
AnswerCorrect: Option B. Ammeter.
  1. Which part of human brain controls heartbeat?
    A. Cerebrum B. Cerebellum C. Medulla D. Hypothalamus
AnswerCorrect: Option C. Medulla oblongata.
  1. The gas responsible for greenhouse effect is:
    A. CO₂ B. N₂ C. O₂ D. H₂
AnswerCorrect: Option A. Carbon dioxide.
  1. The chemical name of vitamin C is:
    A. Ascorbic acid B. Citric acid C. Tartaric acid D. Lactic acid
AnswerCorrect: Option A. Ascorbic acid.
  1. An example of homogeneous mixture is:
    A. Air B. Sand C. Salad D. Soil
AnswerCorrect: Option A. Air.
  1. The process of photosynthesis produces:
    A. Glucose & O₂ B. CO₂ & H₂O C. Starch only D. O₂ only
AnswerCorrect: Option A. Glucose and oxygen.
  1. Which particle has no electric charge?
    A. Electron B. Proton C. Neutron D. Alpha
AnswerCorrect: Option C. Neutron.
  1. The SI unit of pressure is:
    A. N B. Pa C. J D. W
AnswerCorrect: Option B. Pascal.
  1. The filament of electric bulb is made of:
    A. Copper B. Tungsten C. Nichrome D. Aluminium
AnswerCorrect: Option B. Tungsten.
  1. Which disease is caused by deficiency of iodine?
    A. Goitre B. Anaemia C. Scurvy D. Rickets
AnswerCorrect: Option A. Goitre.
  1. The acceleration due to gravity at poles is:
    A. zero B. minimum C. maximum D. same as equator
AnswerCorrect: Option C. Maximum due to less centrifugal & flattening.
  1. The process of conversion of vapour into liquid is called:
    A. Evaporation B. Condensation C. Sublimation D. Transpiration
AnswerCorrect: Option B. Condensation.