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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: Option A. Explanation: Australia defeated South Africa in final.
  1. The currency of Argentina is:
    A. Peso B. Real C. Sol D. Bolívar
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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 %
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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 %
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: Option A. Explanation: Standard matrix decoding.

General Science (25)

  1. The unit of electric charge is:
    A. Ampere B. Coulomb C. Volt D. Ohm
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: 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
AnswerCorrect: Option B. Explanation: Concave lens diverges light.
  1. The chemical formula of baking soda is:
    A. Na₂CO₃ B. NaHCO₃ C. NaCl D. NaOH
AnswerCorrect: Option B. Explanation: Sodium bicarbonate.
  1. The hardest naturally occurring substance is:
    A. Diamond B. Graphite C. Quartz D. Corundum
AnswerCorrect: Option A. Explanation: Diamond (10 on Mohs scale).
  1. The part of brain controlling heartbeat is:
    A. Cerebrum B. Cerebellum C. Medulla D. Hypothalamus
AnswerCorrect: Option C. Explanation: Medulla oblongata.
  1. Which gas is produced during photosynthesis?
    A. CO₂ B. O₂ C. N₂ D. H₂
AnswerCorrect: Option B. Explanation: Oxygen released from water splitting.
  1. The atomic number of iron is:
    A. 24 B. 25 C. 26 D. 27
AnswerCorrect: Option C. Explanation: Fe has 26 protons.
  1. The device used to measure current is:
    A. Voltmeter B. Ammeter C. Galvanometer D. Ohmmeter
AnswerCorrect: Option B. Explanation: Ammeter in series.
  1. Which vitamin is water-soluble?
    A. A B. D C. E D. C
AnswerCorrect: Option D. Explanation: Vit-C (ascorbic acid).
  1. The SI unit of pressure is:
    A. N B. Pa C. J D. W
AnswerCorrect: Option B. Explanation: Pascal = N/m².
  1. The process of loss of water by leaves is:
    A. Transpiration B. Respiration C. Perspiration D. Evaporation
AnswerCorrect: Option A. Explanation: Transpiration through stomata.
  1. Which metal is liquid at room temperature?
    A. Na B. Hg C. Al D. Ag
AnswerCorrect: Option B. Explanation: Mercury.
  1. The hormone insulin is secreted by:
    A. Liver B. Pancreas C. Kidney D. Thyroid
AnswerCorrect: 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
AnswerCorrect: Option B. Explanation: g ≈ 9.8 m/s².
  1. The chemical name of vitamin B1 is:
    A. Riboflavin B. Thiamine C. Niacin D. Pyridoxine
AnswerCorrect: Option B. Explanation: Thiamine.
  1. Which wave cannot travel in vacuum?
    A. Light B. Radio C. Sound D. X-rays
AnswerCorrect: Option C. Explanation: Sound needs medium.
  1. The number of bones in adult human body is:
    A. 206 B. 216 C. 306 D. 186
AnswerCorrect: Option A. Explanation: 206 bones.
  1. The reaction between an acid and a base is called:
    A. Oxidation B. Reduction C. Neutralization D. Combustion
AnswerCorrect: Option C. Explanation: Salt + water formed.
  1. The main constituent of natural gas is:
    A. Ethane B. Methane C. Propane D. Butane
AnswerCorrect: Option B. Explanation: ~85 % methane (CH₄).