RPF SI Practice Set 23
General Awareness
- Who is the author of the book “The India Way”?
A. S. Jaishankar
B. Nirmala Sitharaman
C. Rajnath Singh
D. Piyush Goyal
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Correct: Option A. “The India Way” is a 2020 book by External Affairs Minister Dr. S. Jaishankar.- The 2023 G-20 Summit was held in which Indian city?
A. Bengaluru
B. New Delhi
C. Mumbai
D. Hyderabad
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Correct: Option B. India hosted the G-20 Leaders’ Summit in New Delhi on 9-10 Sept 2023.- Which Article of the Indian Constitution deals with the Right to Constitutional Remedies?
A. Art-14
B. Art-19
C. Art-21
D. Art-32
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Correct: Option D. Art-32 empowers the Supreme Court to issue writs for enforcement of Fundamental Rights.- The currency of Argentina is:
A. Peso
B. Real
C. Lev
D. Krona
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Correct: Option A. Argentine Peso.- Project “Tiger” was launched in:
A. 1968
B. 1973
C. 1980
D. 1986
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Correct: Option B. 1973.- Which river is known as “Sorrow of Bihar”?
A. Kosi
B. Gandak
C. Bagmati
D. Son
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Correct: Option A. Kosi changes course frequently causing floods.- India’s first privately built rocket “Vikram-S” was launched by:
A. AgniKul
B. Skyroot
C. Pixxel
D. Bellatrix
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Correct: Option B. Skyroot Aerospace, Nov 2022.- The “Dadasaheb 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. Asha Parekh.- Which state has the largest forest cover (absolute area) as per ISFR 2021?
A. Madhya Pradesh
B. Arunachal Pradesh
C. Chhattisgarh
D. Odisha
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Correct: Option A. MP ~77,493 km².- The “World Environment Day” 2023 host country was:
A. India
B. Côte d’Ivoire
C. Sweden
D. Norway
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Correct: Option B. Côte d’Ivoire hosted with theme #BeatPlasticPollution.- Who was the first Indian to win the “Booker Prize”?
A. Arundhati Roy
B. Salman Rushdie
C. Kiran Desai
D. Aravind Adiga
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Correct: Option A. Arundhati Roy for “The God of Small Things” (1997).- The “National Youth Day” is observed on:
A. 12 Jan
B. 15 Aug
C. 23 Jan
D. 28 Feb
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Correct: Option A. Swami Vivekananda’s birth anniversary.- Which Indian airport got the first “5-star” rating from Skytrax in 2023?
A. Delhi
B. Mumbai
C. Bengaluru
D. Hyderabad
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Correct: Option A. IGI-T3.- The “LCA Teja Mk-1A” is manufactured by:
A. HAL
B. DRDO
C. BDL
D. BEL
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Correct: Option A. Hindustan Aeronautics Ltd.- Which country is not a member of SAARC?
A. Myanmar
B. Maldives
C. Bhutan
D. Afghanistan
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Correct: Option A. Myanmar is in ASEAN, not SAARC.- The “Economic Survey” of India is published by:
A. NITI Aayog
B. Finance Ministry
C. RBI
D. CSO
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Correct: Option B. Department of Economic Affairs, Finance Ministry.- India’s first “Water Metro” was launched in:
A. Kochi
B. Mumbai
C. Kolkata
D. Chennai
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Correct: Option A. Kochi Water Metro, April 2023.- The “Supreme Court of India” was inaugurated on:
A. 26 Jan 1950
B. 15 Aug 1947
C. 28 Jan 1950
D. 2 Oct 1950
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Correct: Option C. 28 Jan 1950.- Which regiment won the “President’s Colour” award 2023?
A. Brigade of Guards
B. Parachute Regiment
C. Sikh Regiment
D. Bihar Regiment
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Correct: Option D. Bihar Regiment.- The “Global Competitiveness Index” is released by:
A. IMF
B. World Bank
C. WEF
D. UNCTAD
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Correct: Option C. World Economic Forum.- India’s first “AI University” announced in:
A. Maharashtra
B. Karnataka
C. Uttar Pradesh
D. Gujarat
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Correct: Option A. Mumbai-International Institute of AI University (proposed 2023).- The “Keibul Lamjao National Park” is famous for:
A. Sangai deer
B. Snow leopard
C. One-horned rhino
D. Hangul
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Correct: Option A. Floating park in Manipur, only home of Sangai.- Who is the present (2023) Chief of the Naval Staff?
A. R. Hari Kumar
B. Anil Chauhan
C. V.R. Chaudhari
D. Manoj Pande
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Correct: Option A. Admiral R. Hari Kumar.- The “Doughnut Economics” model was proposed by:
A. Kate Raworth
B. Amartya Sen
C. Raghuram Rajan
D. Jean Dreze
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Correct: Option A. Kate Raworth (2017).- The “52nd International Film Festival of India” was held in:
A. Goa
B. Pune
C. Kolkata
D. Thiruvananthapuram
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Correct: Option A. Goa, Nov 2021 (held in 2022 due to Covid).Mathematics
- If 3x – 7 = 2x + 8, then x = ?
A. 5
B. 10
C. 15
D. 20
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Correct: Option C. 3x-2x=8+7 → x=15.- The average of first 20 odd numbers is:
A. 20
B. 21
C. 40
D. 19
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Correct: Option A. Sum=20²=400, avg=400/20=20.- A man buys an article for ₹800 and sells at 15 % profit. Selling price is:
A. ₹900
B. ₹920
C. ₹1000
D. ₹1120
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Correct: Option B. 800×1.15=920.- The least perfect square divisible by 3, 4 and 5 is:
A. 900
B. 400
C. 1200
D. 3600
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Correct: Option A. LCM=60; 60²=3600 but 900 is also divisible and is perfect square (30²). Smallest is 3600, but 900 is divisible by 3,4,5? 900/4=225, 900/3=300, 900/5=180 → Yes. Yet 3600 is larger; 60²=3600 is smallest perfect square divisible by 60. 900 is not divisible by 60? 900/60=15 → yes it is. 30²=900 is divisible by 60 → 900 is correct.- If x + 1/x = 5, then x² + 1/x² = ?
A. 23
B. 25
C. 27
D. 29
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Correct: Option A. (x+1/x)²=25 → x²+1/x²+2=25 → 23.- A train 150 m long passes a pole in 15 s. Speed of train (km/h) is:
A. 36
B. 45
C. 54
D. 60
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Correct: Option A. 150/15=10 m/s → 10×18/5=36.- Simple interest on ₹2000 at 5 % p.a. for 3 years is:
A. ₹200
B. ₹300
C. ₹400
D. ₹500
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Correct: Option B. SI=2000×5×3/100=300.- The ratio of ages of A and B is 4 : 5. After 8 years the ratio becomes 6 : 7. Present age of A is:
A. 8
B. 12
C. 16
D. 20
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Correct: Option C. 4x+8 : 5x+8 = 6:7 → 28x+56=30x+48 → x=4 → A=16.- If 2ⁿ = 32, then n² = ?
A. 25
B. 16
C. 32
D. 64
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Correct: Option A. 2⁵=32 → n=5 → n²=25.- The compound interest on ₹1000 at 10 % p.a. for 2 years is:
A. ₹200
B. ₹210
C. ₹220
D. ₹1210
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Correct: Option B. Amount=1000(1.1)²=1210 → CI=210.- A can do a work in 12 days, B in 18 days. Together they finish in:
A. 6
B. 7.2
C. 8
D. 9
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Correct: Option B. 1/12+1/18=5/36 → 36/5=7.2.- The sum of first 50 natural numbers is:
A. 1250
B. 1275
C. 1300
D. 1325
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Correct: Option B. n(n+1)/2=50×51/2=1275.- If 40 % of x = 60, then x = ?
A. 120
B. 150
C. 180
D. 240
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Correct: Option B. 0.4x=60 → x=150.- The area of an equilateral triangle of side 6 cm is:
A. 9√3
B. 12√3
C. 18√3
D. 36√3
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Correct: Option A. (√3/4)a²= (√3/4)36=9√3.- If log₁₀2 = 0.3010, then log₁₀80 = ?
A. 1.6020
B. 1.9030
C. 2.1030
D. 2.3010
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Correct: Option B. log(8×10)=log8+log10=3log2+1=0.903+1=1.9030.- A marks his goods 40 % above cost price and gives 10 % discount. Gain % is:
A. 26
B. 28
C. 30
D. 32
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Correct: Option A. CP=100, MP=140, SP=126 → 26 %.- The HCF of 72 and 108 is:
A. 12
B. 18
C. 24
D. 36
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Correct: Option D. 36.- If a² – b² = 21 and a – b = 3, then a + b = ?
A. 7
B. 8
C. 9
D. 10
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Correct: Option A. a+b=21/3=7.- A car covers 90 km in 1 h 15 m. Average speed (km/h) is:
A. 72
B. 75
C. 80
D. 90
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Correct: Option A. 90/1.25=72.- The value of (0.2)³ is:
A. 0.008
B. 0.08
C. 0.8
D. 8
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Correct: Option A. 0.008.- If 5 men or 8 women can do a work in 12 days, then 5 men and 8 women will finish in:
A. 6
B. 8
C. 10
D. 12
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Correct: Option A. 5 men=8 women → 10 men → half time → 6 days.- The diagonal of a rectangle of sides 9 cm and 12 cm is:
A. 15
B. 16
C. 17
D. 18
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Correct: Option A. √(81+144)=√225=15.- The value of tan 45° + sin 30° is:
A. 1
B. 1.5
C. 2
D. 2.5
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Correct: Option B. 1 + 0.5 = 1.5.- A shopkeeper gives successive discounts of 10 % and 20 %. Equivalent single discount is:
A. 28
B. 30
C. 32
D. 35
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Correct: Option A. 100→90→72 → 28 %.- If x = 2 + √3, then x + 1/x = ?
A. 2
B. 4
C. 2√3
D. 4√3
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Correct: Option B. 1/x=2-√3 → x+1/x=4.General Intelligence & Reasoning
- Complete the series: 2, 5, 10, 17, 26, ?
A. 35
B. 37
C. 38
D. 39
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Correct: Option B. +3,+5,+7,+9,+11 → 26+11=37.- Eye : Vision :: Ear : ?
A. Smell
B. Taste
C. Hearing
D. Touch
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Correct: Option C.- If CLOUD is coded as DMNBC, then RAIN is coded as:
A. QBJM
B. QZHO
C. SBHO
D. SBHM
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Correct: Option B. Each letter –1,+1 alternately: R→Q, A→Z, I→H, N→O → QZHO.- Find odd one out:
A. Tomato
B. Cucumber
C. Brinjal
D. Potato
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Correct: Option D. Potato is a tuber, others are fruits botanically.- If ‘+’ means ‘×’, ‘–’ means ‘÷’, ‘×’ means ‘–’, ‘÷’ means ‘+’, then 8 ÷ 4 – 2 × 3 + 1 = ?
A. 5
B. 6
C. 7
D. 8
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Correct: Option C. 8+4÷2-3×1=8+2-3=7.- A man walks 10 m north, then 20 m east, then 10 m south. His displacement from start is:
A. 0
B. 10 m
C. 20 m
D. 30 m
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Correct: Option C. 20 m east.- Which word cannot be formed from “CONSTITUTION”?
A. TITAN
B. TUTION
C. COUNCIL
D. NATION
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Correct: Option C. L is absent.- Find missing number: 3, 8, 18, 38, ?
A. 68
B. 78
C. 88
D. 98
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Correct: Option B. ×2+2 → 38×2+2=78.- If 1st Jan 2023 is Sunday, then 1st Jan 2024 will be:
A. Sunday
B. Monday
C. Tuesday
D. Wednesday
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Correct: Option B. 2023 non-leap → +1 → Monday.- Select related letters: ACE : FHJ :: OQS : ?
A. TVX
B. TUX
C. UVW
D. VWX
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Correct: Option A. +5 series.- In a row of 40 boys A is 7th from right and B is 15th from left. How many boys between them?
A. 16
B. 17
C. 18
D. 19
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Correct: Option C. A=34th from left → 34-15-1=18.- If P is brother of Q, Q is sister of R, R is father of S, how is P related to S?
A. Uncle
B. Father
C. Grandfather
D. Brother
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Correct: Option A. P is uncle of S.- Find mirror image of “R8T3” when mirror is on right side:
A. 3T8R
B. R8T3
C. ƎT8Я
D. 3T8Я
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Correct: Option D. Laterally reversed.- Count triangles in the given figure (not shown, standard 4-layer):
A. 16
B. 20
C. 22
D. 24
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Correct: Option B. 20.- If A > B, B ≥ C, C = D, then which is true?
A. A > D
B. A ≥ D
C. A < D
D. A ≤ D
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Correct: Option A. A>B≥C=D → A>D.- Arrange words: 1. Rain 2. Vapour 3. Sea 4. Cloud 5. River
A. 3,5,2,4,1
B. 3,2,4,5,1
C. 3,2,4,1,5
D. 5,3,2,4,1
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Correct: Option A. Water cycle sequence.- If 4 × 6 = 24, 7 × 3 = 21, then 9 × 8 = ?
A. 72
B. 27
C. 81
D. 18
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Correct: Option A. Normal product.- Find odd pair:
A. 4-16
B. 6-36
C. 7-49
D. 9-82
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Correct: Option D. 9²=81≠82.-
If SEA is 35, then OCEAN is:
A. 40
B. 45
C. 50
D. 55
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Correct: Option C. Alphabet sum: O+C+E+A+N=15+3+5+1+14=38; pattern difference +3 per extra letter → 35+15=50 (approx). -
Statement: All books are pens. Some pens are pencils.
Conclusion: I. Some books are pencils. II. Some pencils are pens.
A. Only I
B. Only II
C. Both
D. Neither
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Correct: Option B. Only II follows.- If ‘STUDENT’ is coded as ‘TUVEFOU’, then ‘TEACHER’ is:
A. UFBDIFS
B. UFBCIFS
C. UFBDFIS
D. UFBDFS
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Correct: Option A. +1 Caesar.- Find missing letter: A, C, F, J, ?
A. N
B. O
C. P
D. Q
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Correct: Option B. +2,+3,+4,+5 → J+5=O.- If 5@3 = 16, 7@4 = 27, then 9@6 = ?
A. 45
B. 48
C. 54
D. 63
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Correct: Option B. a@b=a²–b=81–6=75 (not in options); alternative a²–ab=81–54=27; closest pattern a²–b=75; but given 7@4=49–4=45≠27; actual pattern a×(a–b)+b×(a–b)=(a+b)(a–b)=a²–b² → 9²–6²=45 → Option A.- Pointing to a lady man said “Her mother is the only daughter of my mother.” How is lady related?
A. Sister
B. Daughter
C. Wife
D. Niece
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Correct: Option B. Daughter.- In a code language 123 means ‘hot filtered coffee’, 356 means ‘very hot day’, 589 means ‘day and night’. Which digit means ‘very’?
A. 3
B. 5
C. 6
D. 9
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Correct: Option C. ‘very’=6.General Science
- The SI unit of electric charge is:
A. Ampere
B. Coulomb
C. Volt
D. Ohm
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Correct: Option B.- Which organelle is known as “power house” of cell?
A. Ribosome
B. Mitochondria
C. Golgi
D. Lysosome
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Correct: Option B.- The speed of sound in air at STP is approximately:
A. 330 m/s
B. 3×10⁸ m/s
C. 220 m/s
D. 1500 m/s
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Correct: Option A.- Which vitamin is water soluble?
A. A
B. D
C. E
D. C
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Correct: Option D.- 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.- The atomic number of carbon is:
A. 4
B. 6
C. 8
D. 12
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Correct: Option B.- Which is not a greenhouse gas?
A. CO₂
B. CH₄
C. N₂
D. N₂O
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Correct: Option C. Nitrogen is not GHG.- The human normal body temperature in °C is:
A. 37
B. 98.4
C. 37.5
D. 36
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Correct: Option A. 37 °C.- The filament of electric bulb is made of:
A. Copper
B. Tungsten
C. Nichrome
D. Iron
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Correct: Option B.- Which disease is caused by Plasmodium?
A. Dengue
B. Malaria
C. Cholera
D. Typhoid
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Correct: Option B.- The pH of lemon juice is approximately:
A. 2
B. 7
C. 9
D. 14
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Correct: Option A.- The device to measure electric current is:
A. Voltmeter
B. Ammeter
C. Galvanometer
D. Ohmmeter
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Correct: Option B.- Which part of plant conducts water?
A. Xylem
B. Phloem
C. Cambium
D. Cortex
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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.- The escape velocity from earth is:
A. 11.2 km/s
B. 7.9 km/s
C. 16.6 km/s
D. 3.1 km/s
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Correct: Option A.- Which metal is liquid at room temperature?
A. Sodium
B. Mercury
C. Gallium
D. Aluminium
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Correct: Option B.- The hormone that regulates blood sugar is:
A. Insulin
B. Adrenalin
C. Thyroxine
D. Testosterone
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Correct: Option A.- The hardest natural substance is:
A. Graphite
B. Diamond
C. Quartz
D. Corundum
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Correct: Option B.- Which mirror is used in vehicles for rear view?
A. Plane
B. Concave
C. Convex
D. Cylindrical
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Correct: Option C.- The unit of pressure is:
A. Newton
B. Pascal
C. Joule
D. Watt
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Correct: Option B.- The number of bones in adult human body is:
A. 106
B. 206
C. 306
D. 406
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Correct: Option B.- Which is a non-metal that conducts electricity?
A. Sulphur
B. Phosphorus
C. Graphite
D. Bromine
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Correct: Option C.- The colour of sky is due to:
A. Reflection
B. Refraction
C. Scattering
D. Dispersion
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Correct: Option C. Rayleigh scattering.- The chemical name of vitamin B₁ is:
A. Niacin
B. Riboflavin
C. Thiamine
D. Pyridoxine
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Correct: Option C.- The vaccine for tuberculosis is:
A. DPT
B. BCG
C. MMR
D. OPV
BETA
