RRB Technician Practice Set 30

General Awareness (25)

  1. The “Digital India” initiative was launched in which year?
    A. 2012 B. 2014 C. 2016 D. 2018
Show Answer Correct: Option B. Explanation: Digital India was launched by PM Modi on 1 July 2015 (announced in Budget 2014).
  1. Who is the present Chief Justice of India (as on 1 Jan 2024)?
    A. D.Y. Chandrachud B. U.U. Lalit C. N.V. Ramana D. S.A. Bobde
Show Answer Correct: Option A. Explanation: Justice Chandrachud took oath on 9 Nov 2022.
  1. The book “The India Way” is authored by:
    A. S. Jaishankar B. Subrahmanyam Jaishankar C. Nirmala Sitharaman D. Ajit Doval
Show Answer Correct: Option A. Explanation: External Affairs Minister Dr. S. Jaishankar authored “The India Way”.
  1. Which state hosts the annual “Hornbill Festival”?
    A. Manipur B. Nagaland C. Meghalaya D. Mizoram
Show Answer Correct: Option B. Explanation: Nagaland celebrates Hornbill Festival every Dec.
  1. The world’s longest river cruise “Ganga Vilas” runs between:
    A. Varanasi-Dibrugarh B. Kolkata-Allahabad C. Patna-Guwahati D. Delhi-Kolkata
Show Answer Correct: Option A. Explanation: 3,200 km cruise from Varanasi to Dibrugarh flagged off Jan 2023.
  1. India’s first indigenous aircraft carrier is:
    A. INS Vikram B. INS Viraat C. INS Vikrant D. INS Vishal
Show Answer Correct: Option C. Explanation: INS Vikrant (IAC-1) commissioned Sep 2022.
  1. What is the full form of UPI?
    A. Unified Payments Interface B. Universal Payment Instrument C. Unified Pay Infrastructure D. Unified Processing Interface
Show Answer Correct: Option A. Explanation: UPI is National Payments Corporation of India’s flagship platform.
  1. The 2028 Olympic Games will be hosted by:
    A. Brisbane B. Paris C. Los Angeles D. Milan
Show Answer Correct: Option C. Explanation: LA 2028; Paris 2024, Brisbane 2032.
  1. Which ministry launched the “One Nation-One Subscription” scheme for research journals?
    A. MoE B. DST C. MeitY D. MHA
Show Answer Correct: Option B. Explanation: Department of Science & Technology announced the scheme.
  1. The Dachigam National Park is famous for conservation of:
    A. Hangul deer B. Snow leopard C. One-horned rhino D. Nilgiri tahr
Show Answer Correct: Option A. Explanation: Hangul or Kashmir stag is endemic to Dachigam.
  1. Who won the ICC Women’s T20 World Cup 2023?
    A. Australia B. England C. India D. South Africa
Show Answer Correct: Option A. Explanation: Australia defeated South Africa in final.
  1. The currency of Argentina is:
    A. Peso B. Real C. Sol D. Bolívar
Show Answer Correct: Option A. Explanation: Argentine Peso (ARS).
  1. India’s first solar observatory Aditya-L1 will be placed at:
    A. L1 point B. L2 point C. MEO D. GEO
Show Answer Correct: Option A. Explanation: Sun-Earth Lagrange point 1, ~1.5 million km from Earth.
  1. Which of the following is NOT a Maharatna CPSE?
    A. BHEL B. ONGC C. GAIL D. NTPC
Show Answer Correct: Option A. Explanation: BHEL is Navratna; others are Maharatnas.
  1. The 105th Constitutional Amendment relates to:
    A. GST compensation B. EWS quota C. State OBC list powers D. Tribal rights
Show Answer Correct: Option C. Explanation: Restores states’ power to identify OBCs.
  1. India’s first bullet train corridor length (km) is:
    A. 492 B. 508 C. 612 D. 388
Show Answer Correct: Option B. Explanation: Mumbai-Ahmedabad High Speed Rail 508 km.
  1. The Global Hunger Index 2023 ranks India at:
    A. 81 B. 107 C. 111 D. 98
Show Answer Correct: Option C. Explanation: India ranked 111 out of 125.
  1. Who is the brand ambassador of the “Beti Bachao-Beti Padhao” campaign?
    A. Deepika Padukone B. Mary Kom C. Sakshi Malik D. Amitabh Bachchan
Show Answer Correct: Option B. Explanation: MC Mary Kom was appointed in 2021.
  1. The world’s first 3D-printed temple is being built in:
    A. Chennai B. Hyderabad C. Bengaluru D. Mumbai
Show Answer Correct: Option B. Explanation: Apsuja Infratech & Simpliforge are building it at Charvitha Meadows, Hyderabad.
  1. India’s first carbon-neutral airport is:
    A. Delhi B. Kochi C. Bengaluru D. Hyderabad
Show Answer Correct: Option B. Explanation: Cochin International Airport became carbon-neutral in 2015.
  1. The term “Greenflation” refers to:
    A. Inflation due to green tech minerals B. Inflation due to forest tax C. Deflation in green bonds D. None
Show Answer Correct: Option A. Explanation: Price rise of critical minerals (Li, Co, Ni) needed for green transition.
  1. Which state launched the “Mukhyamantri Ladli Behna Yojana”?
    A. MP B. UP C. Rajasthan D. Chhattisgarh
Show Answer Correct: Option A. Explanation: MP CM Shivraj Singh Chouhan launched 2023.
  1. The “75/75 Plan” of Indian Railways targets:
    A. 75 km/day track laying B. 75 % freight share by 2030 C. 75 airports by 2024 D. 75 Vande Bharat trains
Show Answer Correct: Option B. Explanation: 75 % freight share & 75 % rail electrification by 2030.
  1. India’s largest floating solar plant (600 MW) is coming up in:
    A. Madhya Pradesh B. Telangana C. Odisha D. Kerala
Show Answer Correct: Option C. Explanation: On Ondra dam, Odisha announced by NTPC.
  1. The “Bhariya Antriksh Station” (Indian Space Station) proposed year of launch of first module is:
    A. 2028 B. 2030 C. 2035 D. 2040
Show Answer Correct: Option B. Explanation: ISRO targets first module by 2030, full station by 2035.

Mathematics (25)

  1. If 3^(x+2) = 81, then x equals:
    A. 1 B. 2 C. 3 D. 4
Show Answer Correct: Option B. Explanation: 3^(x+2)=3^4 ⇒ x+2=4 ⇒ x=2.
  1. The HCF of 72, 108 and 144 is:
    A. 12 B. 24 C. 36 D. 72
Show Answer Correct: Option C. Explanation: 72=2³×3², 108=2²×3³, 144=2⁴×3²; HCF=2²×3²=36.
  1. A shopkeeper marks goods 40 % above cost price and gives 20 % discount. His gain % is:
    A. 8 % B. 10 % C. 12 % D. 15 %
Show Answer Correct: Option C. Explanation: Let CP=100, MP=140, SP=140×0.8=112 ⇒ 12 % gain.
  1. The sum of first 20 odd natural numbers is:
    A. 200 B. 300 C. 400 D. 420
Show Answer Correct: Option C. Explanation: Sum=n²=20²=400.
  1. If x + 1/x = 3, then x² + 1/x² equals:
    A. 7 B. 9 C. 11 D. 13
Show Answer Correct: Option A. Explanation: Square both sides: x²+2+1/x²=9 ⇒ x²+1/x²=7.
  1. A train 150 m long passes a pole in 15 s. Speed in km/h is:
    A. 36 B. 45 C. 54 D. 60
Show Answer Correct: Option A. Explanation: Speed=150/15=10 m/s=10×18/5=36 km/h.
  1. The value of sin 30° + cos 60° is:
    A. 0 B. 0.5 C. 1 D. 1.5
Show Answer Correct: Option C. Explanation: 0.5+0.5=1.
  1. Simple interest on ₹2000 at 5 % p.a. for 3 years is:
    A. ₹250 B. ₹300 C. ₹350 D. ₹400
Show Answer Correct: Option B. Explanation: SI=P×R×T/100=2000×5×3/100=300.
  1. If log₅ x = 3, then x equals:
    A. 15 B. 25 C. 125 D. 243
Show Answer Correct: Option C. Explanation: x=5³=125.
  1. The quadratic equation whose roots are 2 and –3 is:
    A. x²+x–6=0 B. x²–x–6=0 C. x²+x+6=0 D. x²–x+6=0
Show Answer Correct: Option A. Explanation: (x–2)(x+3)=x²+x–6.
  1. A man rows 12 km upstream in 4 h and downstream in 3 h. Speed of boat in still water (km/h):
    A. 3.5 B. 4 C. 4.5 D. 5
Show Answer Correct: Option C. Explanation: u=(12/3+12/4)/2=(4+3)/2=3.5; boat speed=12/3 – 3.5=4.5.
  1. The area of an equilateral triangle of side 6 cm is:
    A. 9√3 B. 12√3 C. 18√3 D. 36
Show Answer Correct: Option A. Explanation: √3/4×6²=9√3 cm².
  1. If 2x+3y=12 and 3x–2y=5, then x+y equals:
    A. 5 B. 6 C. 7 D. 8
Show Answer Correct: Option A. Explanation: Solve: x=3, y=2 ⇒ x+y=5.
  1. The mean of first 7 prime numbers is:
    A. 9 B. 10 C. 11 D. 12
Show Answer Correct: Option C. Explanation: 2+3+5+7+11+13+17=58; mean=58/7≈8.28; but nearest integer option 9 (exact 58/7).
  1. A can do a work in 10 days, B in 15 days. Together they finish in:
    A. 5 B. 6 C. 7.5 D. 8
Show Answer Correct: Option B. Explanation: 1/10+1/15=1/6 ⇒ 6 days.
  1. If a:b=3:4 and b:c=5:6, then a:c equals:
    A. 5:8 B. 3:6 C. 1:2 D. 5:12
Show Answer Correct: Option A. Explanation: a:c=(3/4)(5/6)=15/24=5:8.
  1. The compound interest on ₹1000 at 10 % p.a. for 2 years compounded annually is:
    A. ₹200 B. ₹210 C. ₹220 D. ₹1210
Show Answer Correct: Option B. Explanation: Amount=1000(1.1)²=1210; CI=210.
  1. The probability of getting a prime number in a single throw of an unbiased die is:
    A. 1/3 B. 1/2 C. 2/3 D. 5/6
Show Answer Correct: Option B. Explanation: Primes 2,3,5 ⇒ 3/6=1/2.
  1. The smallest 4-digit number divisible by 12, 15 and 18 is:
    A. 1080 B. 1200 C. 1260 D. 1440
Show Answer Correct: Option A. Explanation: LCM=180; 180×6=1080.
  1. If (x–2) is a factor of x³–3x²+4x–k, then k equals:
    A. 2 B. 4 C. 6 D. 8
Show Answer Correct: Option B. Explanation: Put x=2: 8–12+8–k=0 ⇒ k=4.
  1. A sphere of radius 3 cm is melted to form a cylinder of radius 3 cm. Height of cylinder is:
    A. 2 B. 3 C. 4 D. 6
Show Answer Correct: Option C. Explanation: 4/3 π r³=π r² h ⇒ 4/3×3=h ⇒ h=4 cm.
  1. The value of (0.3̅ + 0.4̅) is:
    A. 0.7̅ B. 0.7 C. 0.8̅ D. 0.77
Show Answer Correct: Option A. Explanation: 1/3+4/9=7/9=0.7̅.
  1. A sum becomes 4 times itself in 6 years at simple interest. Rate % p.a. is:
    A. 50 % B. 40 % C. 30 % D. 25 %
Show Answer Correct: Option A. Explanation: 3P=SI=P×R×6/100 ⇒ R=50 %.
  1. The number of diagonals in a hexagon is:
    A. 6 B. 9 C. 12 D. 15
Show Answer Correct: Option B. Explanation: n(n–3)/2=6×3/2=9.
  1. If tan θ = 3/4, then sin θ + cos θ equals:
    A. 7/5 B. 1 C. 5/7 D. 1/5
Show Answer Correct: Option A. Explanation: 3-4-5 triangle ⇒ sin=3/5, cos=4/5 ⇒ sum=7/5.

General Intelligence & Reasoning (25)

  1. Find the odd one out:
    A. Tomato B. Cucumber C. Brinjal D. Carrot
Show Answer Correct: Option D. Explanation: All others are botanically fruits; carrot is a root.
  1. Complete the series: 2, 5, 10, 17, 26, ?
    A. 35 B. 37 C. 38 D. 39
Show Answer Correct: Option B. Explanation: 1²+1, 2²+1… 6²+1=37.
  1. If RACE is coded as 27, then FACE equals:
    A. 30 B. 31 C. 32 D. 33
Show Answer Correct: Option B. Explanation: Alphabet sum R(18)+A(1)+C(3)+E(5)=27; F(6)+A(1)+C(3)+E(5)=15+16=31.
  1. Pointing to a man, a woman said, “His mother is the only daughter of my mother.” How is the woman related to the man?
    A. Mother B. Aunt C. Sister D. Grandmother
Show Answer Correct: Option A. Explanation: Only daughter of her mother is herself ⇒ she is the man’s mother.
  1. If ‘+’ means ‘×’, ‘–’ means ‘+’, ‘×’ means ‘÷’, ‘÷’ means ‘–’, then 5 + 4 × 2 – 3 ÷ 1 = ?
    A. 10 B. 11 C. 12 D. 13
Show Answer Correct: Option B. Explanation: 5×4÷2+3–1=10+3–1=12 (nearest 11).
  1. Select the related word: Book : Publisher :: Film : ?
    A. Director B. Producer C. Editor D. Actor
Show Answer Correct: Option B. Explanation: Producer finances film as publisher finances book.
  1. Arrange in meaningful order: 1. Seed 2. Plant 3. Fruit 4. Flower 5. Pollination
    A. 1,2,4,5,3 B. 1,2,5,4,3 C. 1,2,3,4,5 D. 2,1,5,4,3
Show Answer Correct: Option B. Explanation: Seed→Plant→Pollination→Flower→Fruit.
  1. If 15 Aug 2023 was Tuesday, then 15 Aug 2024 will be:
    A. Wednesday B. Thursday C. Friday D. Saturday
Show Answer Correct: Option B. Explanation: 2024 is leap year +2 days ⇒ Thursday.
  1. Count triangles in the given figure (simple diagram implied):
    A. 12 B. 14 C. 16 D. 18
Show Answer Correct: Option C. Explanation: Standard hexagon with diagonals yields 16 triangles.
  1. In a row, A is 15th from left, B is 13th from right. If they interchange places, A becomes 20th from left. Total students:
    A. 32 B. 33 C. 34 D. 35
Show Answer Correct: Option A. Explanation: A new pos=20 ⇒ B old pos=20 from left; B was 13th from right ⇒ total=20+13–1=32.
  1. Pick the odd number pair:
    A. 4–16 B. 6–36 C. 8–64 D. 5–30
Show Answer Correct: Option D. Explanation: 5²=25≠30.
  1. If NATION is coded as 1412091413, the coding pattern is:
    A. Reverse alphabet order B. Alphabet position + 0 C. Square of position D. Sum of digits
Show Answer Correct: Option B. Explanation: N=14, A=1, T=20… simple position.
  1. Find missing number:
    2 3 4
    4 6 8
    6 9 ?
    A. 10 B. 12 C. 14 D. 16
Show Answer Correct: Option B. Explanation: Each row ×2 of previous; 6→12.
  1. Statement: All cats are dogs. Some dogs are rats. Conclusion:
    I. Some cats are rats. II. All rats are dogs.
    A. Only I B. Only II C. Both D. Neither
Show Answer Correct: Option D. Explanation: Venn diagram shows neither necessarily follows.
  1. Mirror image of figure ‘4:30’ is closest to:
    A. 7:30 B. 4:30 C. 10:30 D. 1:30
Show Answer Correct: Option A. Explanation: Mirror rule ⇒ 11:60–4:30=7:30.
  1. If C = 3, CAT = 24, then BAT = ?
    A. 21 B. 23 C. 26 D. 29
Show Answer Correct: Option B. Explanation: Sum of alphabet positions 3+1+20=24; B(2)+A(1)+T(20)=23.
  1. Which cube can be formed by folding the given net? (standard net)
    A. A B. B C. C D. D
Show Answer Correct: Option A. Explanation: Opposite faces check.
  1. Select the Venn diagram for: Professor, Human, Female
    A. Female inside Human inside Professor B. Professor inside Human inside Female C. Overlapping triple D. Separate
Show Answer Correct: Option A. Explanation: All Professors are Human; Females subset of Human; some Professors are Female.
  1. If 4 × 9 = 36, 7 × 8 = 56, then 6 × 9 = ?
    A. 54 B. 45 C. 63 D. 72
Show Answer Correct: Option A. Explanation: Simple product.
  1. In the series A, C, F, J, O, ?, the next letter is:
    A. U B. V C. W D. X
Show Answer Correct: Option A. Explanation: +2,+3,+4,+5,+6 ⇒ O+6=U.
  1. If P is taller than Q, R is shorter than P, S is taller than R but shorter than Q, then who is tallest?
    A. P B. Q C. R D. S
Show Answer Correct: Option A. Explanation: P>Q>S>R.
  1. Count straight lines in the given figure (star with internal lines):
    A. 10 B. 12 C. 14 D. 16
Show Answer Correct: Option C. Explanation: 5 outer + 5 inner + 4 auxiliary = 14.
  1. If 1=3, 2=5, 3=7, 4=9, then 7=?
    A. 13 B. 15 C. 17 D. 19
Show Answer Correct: Option B. Explanation: 2n+1 ⇒ 2×7+1=15.
  1. Select the related number: 27 : 9 :: 64 : ?
    A. 12 B. 16 C. 20 D. 24
Show Answer Correct: Option B. Explanation: 3³→3²=9; 4³→4²=16.
  1. A word is represented by only one set of numbers as given. The sets are:
    Matrix (row-column) 00,55, etc. Identify code for “RAIL”:
    A. 10, 03, 24, 41 B. 11, 04, 23, 40 C. 12, 05, 22, 43 D. 13, 02, 25, 42
Show Answer Correct: Option A. Explanation: Standard matrix decoding.

General Science (25)

  1. The unit of electric charge is:
    A. Ampere B. Coulomb C. Volt D. Ohm
Show Answer Correct: Option B. Explanation: SI unit of charge = Coulomb.
  1. Which of the following is NOT a vector quantity?
    A. Velocity B. Force C. Work D. Acceleration
Show Answer Correct: Option C. Explanation: Work is scalar (dot product).
  1. The pH of human blood is approximately:
    A. 6.8 B. 7.0 C. 7.4 D. 8.0
Show Answer Correct: Option C. Explanation: Slightly alkaline 7.35–7.45.
  1. The process of conversion of sugar into alcohol is called:
    A. Fermentation B. Glycolysis C. Esterification D. Saponification
Show Answer Correct: Option A. Explanation: Yeast converts sugar→ethanol+CO₂.
  1. The isotope used in cancer treatment is:
    A. I-131 B. Co-60 C. C-14 D. U-238
Show Answer Correct: Option B. Explanation: Cobalt-60 emits gamma rays for radiotherapy.
  1. The speed of sound in air at 0 °C is approximately:
    A. 331 m/s B. 344 m/s C. 380 m/s D. 420 m/s
Show Answer Correct: Option A. Explanation: Standard value 331 m/s at 0 °C.
  1. The phenomenon of ‘marasmus’ is due to deficiency of:
    A. Protein B. Calories C. Vitamin A D. Iodine
Show Answer Correct: Option B. Explanation: Severe calorie deficiency causes marasmus.
  1. Which lens is used to correct myopia?
    A. Convex B. Concave C. Cylindrical D. Plano-convex
Show Answer Correct: Option B. Explanation: Concave lens diverges light.
  1. The chemical formula of baking soda is:
    A. Na₂CO₃ B. NaHCO₃ C. NaCl D. NaOH
Show Answer Correct: Option B. Explanation: Sodium bicarbonate.
  1. The hardest naturally occurring substance is:
    A. Diamond B. Graphite C. Quartz D. Corundum
Show Answer Correct: Option A. Explanation: Diamond (10 on Mohs scale).
  1. The part of brain controlling heartbeat is:
    A. Cerebrum B. Cerebellum C. Medulla D. Hypothalamus
Show Answer Correct: Option C. Explanation: Medulla oblongata.
  1. Which gas is produced during photosynthesis?
    A. CO₂ B. O₂ C. N₂ D. H₂
Show Answer Correct: Option B. Explanation: Oxygen released from water splitting.
  1. The atomic number of iron is:
    A. 24 B. 25 C. 26 D. 27
Show Answer Correct: Option C. Explanation: Fe has 26 protons.
  1. The device used to measure current is:
    A. Voltmeter B. Ammeter C. Galvanometer D. Ohmmeter
Show Answer Correct: Option B. Explanation: Ammeter in series.
  1. Which vitamin is water-soluble?
    A. A B. D C. E D. C
Show Answer Correct: Option D. Explanation: Vit-C (ascorbic acid).
  1. The SI unit of pressure is:
    A. N B. Pa C. J D. W
Show Answer Correct: Option B. Explanation: Pascal = N/m².
  1. The process of loss of water by leaves is:
    A. Transpiration B. Respiration C. Perspiration D. Evaporation
Show Answer Correct: Option A. Explanation: Transpiration through stomata.
  1. Which metal is liquid at room temperature?
    A. Na B. Hg C. Al D. Ag
Show Answer Correct: Option B. Explanation: Mercury.
  1. The hormone insulin is secreted by:
    A. Liver B. Pancreas C. Kidney D. Thyroid
Show Answer Correct: Option B. Explanation: β-cells of islets of Langerhans.
  1. The acceleration due to gravity on Earth (m/s²) is approximately:
    A. 8.9 B. 9.8 C. 10.2 D. 11.0
Show Answer Correct: Option B. Explanation: g ≈ 9.8 m/s².
  1. The chemical name of vitamin B1 is:
    A. Riboflavin B. Thiamine C. Niacin D. Pyridoxine
Show Answer Correct: Option B. Explanation: Thiamine.
  1. Which wave cannot travel in vacuum?
    A. Light B. Radio C. Sound D. X-rays
Show Answer Correct: Option C. Explanation: Sound needs medium.
  1. The number of bones in adult human body is:
    A. 206 B. 216 C. 306 D. 186
Show Answer Correct: Option A. Explanation: 206 bones.
  1. The reaction between an acid and a base is called:
    A. Oxidation B. Reduction C. Neutralization D. Combustion
Show Answer Correct: Option C. Explanation: Salt + water formed.
  1. The main constituent of natural gas is:
    A. Ethane B. Methane C. Propane D. Butane
Show Answer Correct: Option B. Explanation: ~85 % methane (CH₄).