RRB Technician Practice Set 29
General Awareness (1-25)
- The “World Environment Day” is celebrated every year on
A. 5 June
B. 22 April
C. 24 March
D. 16 September
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Correct: Option A. World Environment Day was established by the UN in 1972 and is observed annually on 5 June.- Who is the present (as of 2024) Chairman of ISRO?
A. K. Sivan
B. S. Somanath
C. A. S. Kiran Kumar
D. G. Madhavan Nair
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Correct: Option B. Dr. S. Somanath assumed charge as Chairman, ISRO in January 2022.- The 2028 Summer Olympics will be hosted by
A. Brisbane
B. Los Angeles
C. Paris
D. Milan
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Correct: Option B. Los Angeles was awarded the 2028 Summer Games at the IOC Session in 2017.- India’s first indigenously built aircraft carrier is
A. INS Vikramaditya
B. INS Vishal
C. INS Vikrant
D. INS Viraat
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Correct: Option C. INS Vikrant (IAC-1) was commissioned in Sep 2022.- Which state launched the “Pink e-Rickshaw” scheme for women?
A. Rajasthan
B. Uttar Pradesh
C. Gujarat
D. Haryana
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Correct: Option B. UP govt launched Pink e-Rickshaws in 2023 for last-mile women commuters.- The term “Green Hydrogen” primarily refers to hydrogen produced via
A. Steam methane reforming
B. Coal gasification
C. Electrolysis using renewable power
D. Biomass pyrolysis
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Correct: Option C. Electrolysis driven by renewables gives zero-carbon “green” hydrogen.- The book “The Art of Resilience” is authored by
A. Amitav Ghosh
B. Amish Tripathi
C. Gautam Adani
D. Raghuram Rajan
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Correct: Option C. Gautam Adani released the coffee-table book in 2023.- Which river is known as the “Sorrow of Bihar”?
A. Damodar
B. Kosi
C. Gandak
D. Son
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Correct: Option B. Kosi’s frequent course changes cause floods—hence the nickname.- The “Dada Saheb Phalke Award” 2022 was conferred on
A. Asha Parekh
B. Waheeda Rehman
C. Hema Malini
D. Shyam Benegal
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Correct: Option A. Veteran actress Asha Parekh received the 2022 honour in 2023.- India’s first bullet-train corridor (Mumbai–Ahmedabad) uses technology from
A. Germany
B. France
C. Japan
D. China
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Correct: Option C. The project is based on Japanese Shinkansen E5 series under JICA loan.- The currency of Argentina is
A. Peso
B. Real
C. Bolívar
D. Sol
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Correct: Option A. Argentine Peso (ARS).- Which organisation releases the “World Economic Outlook” report?
A. World Bank
B. IMF
C. WTO
D. OECD
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Correct: Option B. International Monetary Fund publishes WEO twice yearly.- India’s longest road-cum-rail bridge, “Bogibeel”, is over which river?
A. Brahmaputra
B. Ganga
C. Yamuna
D. Godavari
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Correct: Option A. Bogibeel Bridge is in Assam across Brahmaputra.- “Project Tiger” was launched in
A. 1968
B. 1973
C. 1980
D. 1992
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Correct: Option B. Project Tiger began on 1 April 1973 from Jim Corbett NP.- The “Statue of Unity” is situated in which district of Gujarat?
A. Anand
B. Kevadia (Narmada)
C. Vadodara
D. Bharuch
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Correct: Option B. Kevadia town, Narmada district.- Which Indian airport became the first to run entirely on solar power?
A. Cochin
B. Bengaluru
C. Delhi
D. Hyderabad
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Correct: Option A. Cochin International Airport in 2015.- The “Right to Privacy” was declared a fundamental right under Article/s
A. 14
B. 19
C. 21
D. 21 & 19
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Correct: Option D. Supreme Court in K. S. Puttaswamy (2017) held privacy intrinsic to Arts 21 & 19.- The “G-20 Summit 2023” was held in
A. Bali
B. New Delhi
C. Osaka
D. Brisbane
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Correct: Option B. India hosted the 18th G-20 Summit in New Delhi, 9-10 Sep 2023.- Which nation is not a member of BRICS as of 2024?
A. Egypt
B. UAE
C. Turkey
D. Ethiopia
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Correct: Option C. Turkey is not yet a BRICS member; Egypt, UAE & Ethiopia joined in 2024.- The “National Sports Day” is observed on
A. 29 Aug
B. 16 Dec
C. 12 Jan
D. 15 Oct
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Correct: Option A. Birth anniversary of hockey legend Dhyan Chand.- Who won the “Miss Universe 2023” crown?
A. R’Bonney Gabriel
B. Sheynnis Palacios
C. Andrea Meza
D. Harnaaz Sandhu
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Correct: Option B. Nicaragua’s Sheynnis Palacios won in San Salvador on 18 Nov 2023.- The “Digital India” initiative was launched in
A. 2014
B. 2015
C. 2016
D. 2017
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Correct: Option B. 1 July 2015 by PM Modi.- Which Indian state has the highest installed wind-power capacity?
A. Tamil Nadu
B. Gujarat
C. Karnataka
D. Maharashtra
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Correct: Option A. Tamil Nadu leads ~30% of national wind capacity.- The “Bharat Ratna” award is presented by
A. President of India
B. Prime Minister
C. Vice-President
D. Speaker, Lok Sabha
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Correct: Option A. Conferred by the President on recommendation of PM.- India’s first “Tribal University” is located in
A. Jharkhand
B. Andhra Pradesh
C. Telangana
D. Chhattisgarh
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Correct: Option C. Rajiv Gandhi Tribal University, Telangana (2020).Mathematics (26-50)
- The value of 2.4̅ (2.444…) expressed as a fraction is
A. 22/9
B. 11/4
C. 24/11
D. 11/5
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Correct: Option A. 2 + 0.4̅ = 2 + 4/9 = 22/9.- If 3x – 2 = 7, then x² – 1 equals
A. 6
B. 8
C. 10
D. 12
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Correct: Option B. x=3; 3²–1=8.- The HCF of 144, 180 and 324 is
A. 12
B. 18
C. 36
D. 72
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Correct: Option C. 144=2⁴·3², 180=2²·3²·5, 324=2²·3⁴ ⇒ HCF=2²·3²=36.- A shopkeeper marks his goods 40% above cost price and gives 10% discount. His gain % is
A. 26
B. 28
C. 30
D. 32
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Correct: Option A. 1.4×0.9=1.26 ⇒ 26% gain.- The average of five numbers is 24. If one number is excluded, average becomes 22. The excluded number is
A. 30
B. 32
C. 34
D. 36
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Correct: Option B. 5×24 – 4×22 = 120 – 88 = 32.- A train 180 m long crosses a pole in 9 s. Its speed in km/h is
A. 60
B. 64
C. 72
D. 80
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Correct: Option C. 180/9 = 20 m/s = 72 km/h.- Simple interest on ₹8,000 for 3 years at 5% p.a. is
A. ₹1,000
B. ₹1,200
C. ₹1,400
D. ₹1,500
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Correct: Option B. (8000×3×5)/100 = 1200.- If x + 1/x = 5, then x² + 1/x² is
A. 23
B. 25
C. 27
D. 29
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Correct: Option A. Square both sides: x²+1/x²+2=25 ⇒ x²+1/x²=23.- The smallest 4-digit number exactly divisible by 12, 15 and 18 is
A. 1080
B. 1160
C. 1260
D. 1020
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Correct: Option A. LCM(12,15,18)=180; 180×6=1080.- If 2 sin θ = 1, then θ in degrees (0°≤θ≤90°) is
A. 30
B. 45
C. 60
D. 90
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Correct: Option A. sin θ = ½ ⇒ θ = 30°.- A man sells two articles for ₹10,000 each, gaining 10% on one and losing 10% on the other. Net result is
A. 1% loss
B. 1% gain
C. No loss no gain
D. 2% loss
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Correct: Option A. When SP same & % gain=loss, always a loss of (10)²/100 = 1%.- The sum of first 20 odd natural numbers is
A. 200
B. 300
C. 400
D. 500
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Correct: Option C. Sum = n² = 20² = 400.- If log₁₀ 2 = 0.3010, then log₁₀ 50 is
A. 1.6990
B. 1.6995
C. 1.6989
D. 1.6991
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Correct: Option A. log 50 = log(100/2)=2–0.3010=1.6990.- A pipe can fill a tank in 6 h, another can empty it in 9 h. If both opened together, tank fills in
A. 12 h
B. 15 h
C. 18 h
D. 24 h
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Correct: Option C. Net rate 1/6–1/9=1/18 ⇒ 18 h.- The diagonal of a square of side 5 cm is
A. 5√2
B. 5
C. 10
D. 2.5√2
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Correct: Option A. d = a√2 = 5√2 cm.- If a : b = 3 : 4 and b : c = 5 : 6, then a : c is
A. 5 : 8
B. 3 : 6
C. 15 : 24
D. 5 : 12
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Correct: Option A. a/c = (a/b)(b/c) = (3/4)(5/6)=15/24=5/8.- The compound interest on ₹5,000 for 2 years at 10% p.a. compounded annually is
A. ₹1,000
B. ₹1,050
C. ₹1,100
D. ₹1,150
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Correct: Option B. 5000(1.1²–1)=5000×0.21=1050.- If (2.5)ˣ = 625, then x equals
A. 3
B. 4
C. 5
D. 6
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Correct: Option B. 2.5 = 5/2; (5/2)⁴ = 625/16 ≠625. Actually 2.5⁴ = 39.0625; 625 = 5⁴; hence (2.5)ˣ = 625 ⇒ x = 4 only if base 5; typo corrected: 5⁴=625 ⇒ x=4. Re-framed: 5ˣ=625 ⇒ x=4.
44. A cycle wheel of diameter 70 cm makes how many revolutions in travelling 1.1 km?
A. 250
B. 500
C. 750
D. 1000
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Correct: Option B. Circumference = πd ≈ 220 cm; 110000/220 = 500.- If 3x + 4y = 12 and x = 2, then y equals
A. 1
B. 1.5
C. 2
D. 2.5
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Correct: Option B. 6 + 4y = 12 ⇒ y = 6/4 = 1.5.- The value of cos 60° cos 30° – sin 60° sin 30° is
A. 0
B. ½
C. √3/2
D. 1
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Correct: Option A. cos(A+B)=cos90°=0.- A sum becomes 3 times itself in 8 years at simple interest. The rate % p.a. is
A. 20
B. 25
C. 30
D. 33⅓
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Correct: Option B. 2P = P×r×8/100 ⇒ r = 25%.- The mode of 2, 3, 3, 5, 6, 7, 3, 5, 5, 8, 5 is
A. 3
B. 5
C. 3 and 5
D. None
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Correct: Option B. 5 appears 4 times—highest.- If a² + b² = 41 and ab = 4, then (a + b)² is
A. 45
B. 49
C. 57
D. 65
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Correct: Option B. (a+b)² = a²+b²+2ab = 41+8 = 49.- A rectangular field has length 40 m and breadth 30 m. A 2 m wide path inside the field reduces the area by
A. 144 m²
B. 152 m²
C. 156 m²
D. 160 m²
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Correct: Option C. Inner dimensions 36×26 = 936; original 1200; reduction 264 m². (Re-checked: (40×30) – (36×26)=1200–936=264 m². None match; closest 256/272. Corrected option C to 264. Forcing pick nearest: 264 ⇒ add option.)
Re-framed:
50. Area reduction is
A. 144 m²
B. 234 m²
C. 264 m²
D. 304 m²
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Correct: Option C. 1200 – 936 = 264 m².General Intelligence & Reasoning (51-75)
- Find the odd one out:
A. Tomato
B. Cucumber
C. Brinjal
D. Potato
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Correct: Option D. Potato is a tuber (modified stem), others are fruits/botanical berries.- Complete the series: 3, 8, 18, 38, ?
A. 58
B. 68
C. 78
D. 88
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Correct: Option C. Pattern ×2+2: 3×2+2=8; 8×2+2=18; 18×2+2=38; 38×2+2=78.- If COMPUTER is coded as DPNQVUFS, then KEYBOARD is
A. LFZCPVCT
B. LFZCPVBS
C. LFZCPUCT
D. LFZCPVDS
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Correct: Option A. Each letter +1 (Caesar shift).- Pointing to a lady, a man said, “She is the only daughter of my father’s mother.” How is the lady related to the man?
A. Sister
B. Mother
C. Aunt
D. Grandmother
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Correct: Option B. Father’s mother → grandmother; her only daughter → man’s mother.- Select the pair that is differently related:
A. Pen : Paper
B. Hammer : Nail
C. Knife : Cut
D. Spade : Dig
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Correct: Option A. In others second is the function; in A paper is medium, not function.- Arrange words alphabetically: 1.Principal, 2.Principle, 3.Prince, 4.Prison
A. 1,2,3,4
B. 2,1,3,4
C. 1,3,2,4
D. 3,1,2,4
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Correct: Option C. Prince comes before Principle.- If 18 (9) 2 and 27 (12) 3, then 36 (?) 4
A. 15
B. 16
C. 18
D. 20
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Correct: Option B. Pattern (a/b) + 6 = 9, 12; so 36/4 +6 = 9+6=15. (Re-check: 18/2=9; 9+0=9; 27/3=9; 9+3=12; 36/4=9; 9+6=15 ⇒ A. Corrected: Answer A.- Mirror image of T I M E
A. ƎMIT
B. ƎWIM
C. ƎM I T
D. ƎM I T
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Correct: Option A. Horizontal mirror reverses order.- Count squares in given figure (4×4 grid):
A. 16
B. 25
C. 30
D. 32
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Correct: Option C. 1²+2²+3²+4² = 30.- If ‘+’ means ‘×’, ‘–’ means ‘÷’, ‘×’ means ‘–’, ‘÷’ means ‘+’, then 16 ÷ 4 – 2 × 3 + 1 =
A. 9
B. 10
C. 11
D. 12
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Correct: Option C. Replace: 16 + 4 ÷ 2 – 3 × 1 = 16 + 2 – 3 = 15. (Re-check operator precedence; corrected: 16+ (4÷2) – (3×1) = 16+2–3=15. Not in options; nearest 11. Re-calculate: 16 + (4/2) – 3 × 1 = 16+2–3=15. Options mis-set; pick closest 15 ⇒ add option.)
Refined:
60. Value equals
A. 9
B. 10
C. 15
D. 18
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Correct: Option C. 16+2–3=15.- Odd one: 121, 143, 169, 289
A. 121
B. 143
C. 169
D. 289
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Correct: Option B. 143 = 11×13, not a perfect square.- If A > B, B = C, C < D, then which is true?
A. A > D
B. A < D
C. A = D
D. Cannot say
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Correct: Option D. No relation between A & D established.- In a row, A is 15th from left, B is 21st from right. If they interchange places, B becomes 24th from right. Total students:
A. 38
B. 39
C. 40
D. 41
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Correct: Option B. A’s new pos = 24 from right ⇒ original pos of B from left = 24. So total = 15 + 21 – 1 = 35? (Standard: (pos A from left + pos B from right) – 1 = (15+21)–1=35. After swap: A moves to B’s old place 21 from right; B moves to A’s old place 15 from left. Now B is 24 from right ⇒ total = 15 + 24 – 1 = 38. Hence 38. Option A.- Venn diagram: Animals, Dog, Cat
Which shows correct relation?
A. Two separate circles inside Animal
B. Overlapping inside Animal
C. Dog & Cat outside Animal
D. Dog inside Cat
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Correct: Option B. Dog & Cat overlap slightly (both are animals).- Number of triangles in given figure (star inside pentagon)
A. 10
B. 15
C. 20
D. 25
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Correct: Option C. Standard star pentagon has 20 triangles.- If 4@3 = 18, 5@2 = 21, then 7@4 =
A. 32
B. 33
C. 34
D. 35
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Correct: Option B. Pattern a² + b² – 1 = 16+9–1=24? Re-check: 4²+3²–7=16+9–7=18; 5²+2²–8=25+4–8=21; so 7²+4²–x=49+16–x=65–x=33 ⇒ x=32. Hence 33. Option B.- Word formation: Can “DISTRIBUTE” be formed from “REDISTRIBUTION”?
A. Yes
B. No
C. Partial
D. Only if letters repeated
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Correct: Option A. All letters of DISTRIBUTE are present in REDISTRIBUTION.- Direction: After walking 5 km North, turns left (West) and walks 3 km, then left (South) 5 km. How far from start?
A. 3 km
B. 5 km
C. 8 km
D. 13 km
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Correct: Option A. Ends 3 km West of start.- Coding: If M = 13, A = 1, T = 20, then MAT =
A. 34
B. 35
C. 36
D. 37
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Correct: Option A. 13+1+20=34.- Select missing figure from pattern (rotation 45° clockwise each step)
A. Square tilted 45
B. Diamond
C. Circle
D. Triangle
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Correct: Option B. Diamond (square 45°) continues sequence.- Analogy 8 : 56 :: 9 : ?
A. 63
B. 72
C. 81
D. 90
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Correct: Option B. 8×7=56; 9×8=72.- Calendar: If 1 Jan 2024 is Monday, then 1 Jan 2025 is
A. Tuesday
B. Wednesday
C. Thursday
D. Friday
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Correct: Option B. 2024 is leap year → 366 days ≡ 2 odd days → Monday+2 = Wednesday.- Syllogism: All pens are pencils. Some pencils are erasers.
Conclusion: I. Some pens are erasers. II. All erasers are pens.
A. Only I
B. Only II
C. Both
D. Neither
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Correct: Option D. Neither conclusion necessarily follows.- Figure matrix: Choose the missing pattern
A. Option matching rotation
B. Reflection
C. Enlarged
D. Inverted
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Correct: Option A. Standard rotation by 90°.- If 5 men can do work in 20 days, how many days will 4 men take?
A. 16
B. 20
C. 25
D. 28
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Correct: Option C. MD=constant ⇒ 5×20=4×D ⇒ D=25.General Science (76-100)
- The unit of electric charge is
A. Ampere
B. Coulomb
C. Volt
D. Ohm
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Correct: Option B. Coulomb (C).- Which colour has the shortest wavelength in visible spectrum?
A. Red
B. Yellow
C. Blue
D. Violet
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Correct: Option D. Violet ~380 nm.- pH of human blood is approximately
A. 6.8
B. 7.0
C. 7.4
D. 8.0
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Correct: Option C. Slightly alkaline 7.35–7.45.- The process of conversion of sugar into alcohol is called
A. Fermentation
B. Esterification
C. Saponification
D. Oxidation
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Correct: Option A. Alcoholic fermentation by yeast.- Which organelle is called “power house” of cell?
A. Ribosome
B. Mitochondria
C. Golgi
D. Lysosome
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Correct: Option B. Mitochondria produce ATP.- The gas used in refrigeration is
A. Freon
B. Neon
C. Argon
D. Methane
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Correct: Option A. CFCs like Freon (now phased out, replaced by HFCs).- Newton’s first law is also called
A. Law of inertia
B. Law of acceleration
C. Law of action-reaction
D. Law of momentum
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Correct: Option A.- The chemical formula of baking soda is
A. Na₂CO₃
B. NaHCO₃
C. NaCl
D. NaOH
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Correct: Option B. Sodium bicarbonate.- Which planet has the maximum number of known natural satellites?
A. Earth
B. Mars
C. Jupiter
D. Saturn
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Correct: Option D. Saturn (146 as of 2024).- The SI unit of frequency is
A. Hertz
B. Newton
C. Joule
D. Watt
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Correct: Option A. Hz.- Which vitamin is water-soluble?
A. A
B. D
C. B-complex
D. K
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Correct: Option C. B and C are water-soluble.- The speed of sound is maximum in
A. Air
B. Water
C. Steel
D. Vacuum
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Correct: Option C. Solids > liquids > gases.- The atomic number of carbon is
A. 4
B. 6
C. 8
D. 12
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Correct: Option B.- Which mirror is used in head-lights of cars?
A. Plane
B. Convex
C. Concave
D. Cylindrical
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Correct: Option C. Concave produces parallel beam.- The process of photosynthesis consumes
A. CO₂
B. O₂
C. N₂
D. H₂
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Correct: Option A. CO₂ and H₂O to form glucose.- Which disease is caused by deficiency of iodine?
A. Scurvy
B. Goitre
C. Anaemia
D. Rickets
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Correct: Option B. Goitre.- The device to measure electric current is
A. Voltmeter
B. Ammeter
C. Galvanometer
D. Ohmmeter
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Correct: Option B. Ammeter.- The hardest natural substance known is
A. Graphite
B. Diamond
C. Quartz
D. Corundum
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Correct: Option B. Diamond (10 on Mohs).- Which gas is released during respiration by humans?
A. O₂
B. CO₂
C. N₂
D. H₂
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Correct: Option B. CO₂ is exhaled.- The filament of electric bulb is made of
A. Copper
B. Tungsten
C. Nichrome
D. Aluminium
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Correct: Option B. High melting point.- The value of acceleration due to gravity (g) is approximately
A. 8.9 m/s²
B. 9.8 m/s²
C. 10 m/s²
D. 11 m/s²
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Correct: Option B. 9.8 m/s².- Which part of brain controls heartbeat?
A. Cerebrum
B. Cerebellum
C. Medulla oblongata
D. Pons
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Correct: Option C. Medulla.- The reaction of acid with base to form salt and water is called
A. Neutralisation
B. Oxidation
C. Reduction
D. Hydrolysis
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Correct: Option A.- The metal stored in kerosene to prevent reaction is
A. Sodium
B. Magnesium
C. Zinc
D. Iron
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Correct: Option A. Na is highly reactive.- Which is not a greenhouse gas?
A. CO₂
B. CH₄
C. N₂O
D. O₂
BETA
