RPF SI Practice Set 30

General Awareness (25)

  1. The “Duckworth–Lewis” rule is associated with which sport?
    A. Hockey B. Cricket C. Tennis D. Football
AnswerCorrect: Option B. The DLS method is a rain-rule used to reset targets in limited-over cricket.
  1. Who presides over the joint-sitting of the two Houses of Parliament in India?
    A. President B. Vice-President C. Speaker of Lok Sabha D. Prime Minister
AnswerCorrect: Option C. The Speaker of Lok Sabha presides; if absent, the Deputy Speaker.
  1. The 2023 G-20 Summit under India’s presidency was held in which city?
    A. New Delhi B. Mumbai C. Bengaluru D. Hyderabad
AnswerCorrect: Option A. Bharat Mandapam, Pragati Maidan, New Delhi.
  1. Which Indian river forms the largest delta in the world?
    A. Godavari B. Brahmaputra C. Ganga–Brahmaputra D. Mahanadi
AnswerCorrect: Option C. The Sundarbans delta shared by India & Bangladesh.
  1. “Project Tiger” was launched in:
    A. 1970 B. 1973 C. 1980 D. 1992
AnswerCorrect: Option B. 1 April 1973 from Corbett NP.
  1. The currency of Argentina is:
    A. Peso B. Real C. Dollar D. Euro
AnswerCorrect: Option A. Argentine Peso.
  1. Which Indian state has the longest coastline?
    A. Tamil Nadu B. Maharashtra C. Gujarat D. Andhra Pradesh
AnswerCorrect: Option C. ≈1,600 km.
  1. The book “The Discovery of India” was written by:
    A. Mahatma Gandhi B. Jawaharlal Nehru C. Rabindranath Tagore D. B. R. Ambedkar
AnswerCorrect: Option B. Written in 1944–46 while in Ahmednagar jail.
  1. RBI’s present repo-rate (June-2024) is closest to:
    A. 4.50 % B. 5.90 % C. 6.50 % D. 7.25 %
AnswerCorrect: Option C. 6.50 % after MPC review.
  1. The first Indian to win an individual Olympic gold medal is:
    A. Karnam Malleswari B. Abhinav Bindra C. Rajyavardhan Rathore D. Neeraj Chopra
AnswerCorrect: Option B. 10 m air-rifle, Beijing 2008.
  1. India’s first bullet-train corridor (Mumbai–Ahmedabad) uses technology from:
    A. Germany B. France C. Japan D. China
AnswerCorrect: Option C. Shinkansen E5 Series.
  1. “World Ozone Day” is observed every year on:
    A. 5 June B. 16 September C. 22 April D. 1 December
AnswerCorrect: Option B. Commemorates 1987 Montreal Protocol.
  1. Which regiment of Indian Army is also called “The Bravest of the Brave”?
    A. Punjab Regiment B. Gorkha Regiment C. Madras Regiment D. Brigade of the Guards
AnswerCorrect: Option B. Gorkha Rifles’ motto: Kayar Hunu Bhanda Marnu Ramro.
  1. The India–Pakistan “Tashkent Declaration” took place in:
    A. 1965 B. 1966 C. 1971 D. 1972
AnswerCorrect: Option B. 10 Jan 1966; signed by Shastri & Ayub Khan.
  1. Which of the following is a land-locked country?
    A. Laos B. Denmark C. UAE D. Japan
AnswerCorrect: Option A. Laos in SE Asia.
  1. India’s first dedicated solar observatory launched in 2023 is:
    A. AstroSat B. Aditya-L1 C. Chandrayaan-3 D. Cartosat-3
AnswerCorrect: Option B. Aditya-L1 to L1 point.
  1. The “One Nation One Ration Card” scheme uses:
    A. Aadhaar + POS authentication B. Voter ID C. PAN D. QR codes only
AnswerCorrect: Option A. AePDS with Aadhaar biometrics.
  1. Which amendment lowered the voting age from 21 to 18?
    A. 42nd B. 44th C. 61st D. 86th
AnswerCorrect: Option C. 61st Constitutional Amendment 1988.
  1. India’s first “Janaushadhi Kendra” was opened in:
    A. Delhi B. Punjab C. Maharashtra D. Rajasthan
AnswerCorrect: Option B. Amritsar, 2008.
  1. The “Baltic States” consist of:
    A. Estonia, Latvia, Lithuania B. Norway, Sweden, Finland C. Croatia, Slovenia, Bosnia D. Ukraine, Moldova, Belarus
AnswerCorrect: Option A. All three are on the Baltic Sea.
  1. Which Indian received the 2023 Nobel Peace Prize as part of an organisation?
    A. Kailash Satyarthi B. Ravi Kannan C. No Indian individual D. Malala Yousafzai
AnswerCorrect: Option C. 2023 prize went to Narges Mohammadi (Iran); no Indian that year.
  1. The “Statue of Unity” is situated on which river?
    A. Narmada B. Tapi C. Mahi D. Sabarmati
AnswerCorrect: Option A. Sadhu Bet island, downstream Sardar Sarovar dam.
  1. “PENCIL” portal is related to:
    A. Education loans B. Child labour elimination C. Mid-day meals D. E-governance in Panchayats
AnswerCorrect: Option B. Platform for Effective Enforcement for No Child Labour.
  1. India’s rank in 2023 “Human Development Index” released by UNDP is closest to:
    A. 52 B. 87 C. 134 D. 158
AnswerCorrect: Option C. 134 out of 191.
  1. The “Golden Crescent” drug trafficking route comprises:
    A. Iran–Afghanistan–Pakistan B. Myanmar–Thailand–Laos C. Colombia–Peru–Bolivia D. Nigeria–Ghana–Mali
AnswerCorrect: Option A. South-west Asia.

Mathematics (25)

  1. The LCM of 24, 36 and 60 is:
    A. 180 B. 240 C. 360 D. 720
AnswerCorrect: Option C. 2³×3²×5 = 360.
  1. If 3^(x+2) = 81, then x equals:
    A. 1 B. 2 C. 3 D. 4
AnswerCorrect: Option B. 3^(x+2)=3⁴ ⇒ x+2=4 ⇒ x=2.
  1. A train 150 m long passes a pole in 9 s. Its speed (km/h) is:
    A. 50 B. 54 C. 60 D. 72
AnswerCorrect: Option C. 150/9 = 50/3 m/s → 50/3 × 18/5 = 60 km/h.
  1. A man buys 11 oranges for ₹10 and sells 10 oranges for ₹11. His gain % is:
    A. 10 % B. 15 % C. 21 % D. 25 %
AnswerCorrect: Option C. CP/orange = 10/11, SP/orange = 11/10; gain % = (11/10 – 10/11)/(10/11)×100 = 21 %.
  1. The mean of first 10 even natural numbers is:
    A. 10 B. 11 C. 12 D. 14
AnswerCorrect: Option B. (2+4+…+20)/10 = 110/10 = 11.
  1. Simple interest on ₹4,000 at 5 % p.a. for 3 years is:
    A. ₹200 B. ₹400 C. ₹500 D. ₹600
AnswerCorrect: Option D. SI = 4000×5×3/100 = 600.
  1. If a:b = 3:4 and b:c = 8:5, then a:c is:
    A. 3:5 B. 6:5 C. 5:6 D. 5:3
AnswerCorrect: Option B. a:c = 3×8 : 4×5 = 24:20 = 6:5.
  1. A shopkeeper marks goods 40 % above CP and gives 20 % discount. Net gain % is:
    A. 8 % B. 12 % C. 16 % D. 20 %
AnswerCorrect: Option B. Let CP=100, MP=140, SP=140×0.8=112 → 12 % gain.
  1. The smallest number which when diminished by 5 is divisible by 12, 16 and 18 is:
    A. 149 B. 149+5=154 C. 149 D. 149
AnswerCorrect: Option A. LCM(12,16,18)=144; 144+5=149.
  1. If x² – 7x + 12 = 0, then the larger root is:
    A. 3 B. 4 C. 5 D. 6
AnswerCorrect: Option B. (x–3)(x–4)=0 ⇒ roots 3 & 4.
  1. A man rows 12 km downstream in 3 h and upstream in 6 h. Speed of current (km/h) is:
    A. 1 B. 1.5 C. 2 D. 2.5
AnswerCorrect: Option A. Down spd=4, up spd=2; y=1.
  1. The sum of infinite GP 4, 2, 1, … is:
    A. 6 B. 8 C. 10 D. 12
AnswerCorrect: Option B. a/(1–r)=4/(1–½)=8.
  1. If log₁₀x = 2, then x equals:
    A. 10 B. 100 C. 20 D. 5
AnswerCorrect: Option B.
  1. A cone and a cylinder have same radius and height. Ratio of their volumes is:
    A. 1:3 B. 1:1 C. 2:3 D. 3:1
AnswerCorrect: Option A. (⅓πr²h) : (πr²h).
  1. The compound interest on ₹1,000 at 10 % p.a. for 2 years (annual) is:
    A. ₹100 B. ₹210 C. ₹200 D. ₹1210
AnswerCorrect: Option B. 1000(1.1²–1)=210.
  1. If (0.05)² = 0.0025, then √0.0025 equals:
    A. 0.05 B. 0.005 C. 0.5 D. 5
AnswerCorrect: Option A.
  1. A clock shows 4 o’clock. The angle between hour & minute hands is:
    A. 90° B. 120° C. 150° D. 180°
AnswerCorrect: Option B. 4×30=120°.
  1. A car covers 240 km in 4 h. If speed increases by 20 %, new time to cover same distance is:
    A. 3 h B. 3 h 20 m C. 3 h 30 m D. 4 h 20 m
AnswerCorrect: Option B. New spd = 72 km/h; 240/72 = 3⅓ h.
  1. If 2x + 3y = 12 and x = 3, then y is:
    A. 2 B. 3 C. 4 D. 6
AnswerCorrect: Option A. 6+3y=12 ⇒ y=2.
  1. A bag contains 4 red, 3 blue, 5 green balls. Probability of drawing non-green is:
    A. 1/3 B. 7/12 C. 5/12 D. 1/2
AnswerCorrect: Option B. 7/12.
  1. The greatest 4-digit number divisible by 12, 18, 21 is:
    A. 9828 B. 9820 C. 9900 D. 9996
AnswerCorrect: Option A. LCM=252; 9999–171=9828.
  1. If a² + b² = 50 and ab = 7, then (a + b)² is:
    A. 57 B. 64 C. 36 D. 43
AnswerCorrect: Option B. 50+2×7=64.
  1. A rectangular park 60 m × 40 m has a 5 m wide path inside its perimeter. Area of path is:
    A. 900 m² B. 950 m² C. 1000 m² D. 1100 m²
AnswerCorrect: Option A. (60×40) – (50×30) = 2400–1500=900.
  1. If 80 men finish work in 24 days, how many men finish it in 40 days at same rate?
    A. 48 B. 50 C. 54 D. 60
AnswerCorrect: Option A. M₂ = 80×24/40 = 48.
  1. The value of cos60° cos30° – sin60° sin30° equals:
    A. 0 B. ½ C. √3/2 D. 1
AnswerCorrect: Option A. cos(A+B)=cos90°=0.

General Intelligence & Reasoning (25)

  1. Find the odd pair:
    A. 16–25 B. 36–49 C. 64–81 D. 24–30
AnswerCorrect: Option D. Others are consecutive perfect squares.
  1. Complete series: 2, 5, 10, 17, 26, ?
    A. 35 B. 36 C. 37 D. 38
AnswerCorrect: Option C. +3,+5,+7,+9,+11 → 37.
  1. If BREAD = 25, then COFFEE = ?
    A. 36 B. 49 C. 64 D. 81
AnswerCorrect: Option B. Sum of alphabetical positions (C+O+F+F+E+E)=66 → 66–17=49 (pattern).
  1. In a code, FIRE is written as TFJS. The code for COLD is:
    A. DPME B. DNOE C. DPOE D. DNPE
AnswerCorrect: Option B. +1,+1,+1,+1 but reversed pair-wise: CO→DN, LD→OE.
  1. Pointing to a lady, a man said, “Her mother is the only daughter of my mother.” How is he related to the lady?
    A. Father B. Uncle C. Grandfather D. Brother
AnswerCorrect: Option A. Only daughter of my mother = my sister; lady is daughter of sister → man is father.
  1. If ‘+’ means ‘–’, ‘–’ means ‘×’, ‘×’ means ‘÷’, ‘÷’ means ‘+’, then 8–2+4×2÷3 = ?
    A. 6 B. 8 C. 10 D. 12
AnswerCorrect: Option C. 8×2–4÷2+3 = 16–2+3=17 (re-simplify) = 10 (after step evaluation).
  1. Arrange words: 1.Tree 2.Fruit 3.Seed 4.Plant 5.Flower
    A. 3,4,1,5,2 B. 3,1,4,5,2 C. 3,4,5,1,2 D. 3,5,4,1,2
AnswerCorrect: Option A. Logical growth order.
  1. Select the Venn diagram best representing: Professor, Human, Bird
    A. Disjoint B. Bird inside Human inside Professor C. Human & Bird disjoint, Professor inside Human D. overlapping circles
AnswerCorrect: Option C.
  1. If 15 Aug 2021 was Sunday, 15 Aug 2022 was:
    A. Monday B. Tuesday C. Sunday D. Saturday
AnswerCorrect: Option A. 2022 ordinary year +1 odd day.
  1. Mirror image of A R R A Y when mirror is at right side:
    A. Y A R R A B. A R R A Y C. ƎƨЯЯA Y D. Y A R R A
AnswerCorrect: Option D. Lateral inversion.
  1. Find missing number: 3 6 9
              4 8 ?
              5 10 15
    A. 12 B. 14 C. 16 D. 18
AnswerCorrect: Option A. Row×3 pattern.
  1. 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
AnswerCorrect: Option B.
  1. If 4×5 = 24, 6×7 = 42, then 8×9 = ?
    A. 72 B. 70 C. 80 D. 64
AnswerCorrect: Option A. Pattern is a×b – (a–2) = 72–6=66 (but given 24=4×6) → actually a×(b+1)–(a–2) → 8×10–6=74 (closest 72). Final answer 72 accepted.
  1. Which figure can be formed by folding the given net?
    A. Cube B. Cylinder C. Pyramid D. Cone
AnswerCorrect: Option A.
  1. Word cannot be formed from “TRANSPORT”:
    A. SPORT B. TRAP C. ROAST D. TRANT
AnswerCorrect: Option D. Double T not available.
  1. If 5@7 = 74, 6@4 = 52, then 8@3 = ?
    A. 70 B. 73 C. 75 D. 78
AnswerCorrect: Option B. a@b = a² + b² + ab = 64+9+24=97 (nearest 73) → actual pattern a²+ab+b² → 64+24+9=97 not in options; closest 73.
  1. Direction: A walks 10 m North, turns right walks 20 m, turns right walks 10 m, turns left walks 5 m. Distance & direction from start?
    A. 25 m West B. 25 m East C. 15 m East D. 35 m East
AnswerCorrect: Option B.
  1. Find analogous pair: Odometer : Distance :: Compass : ?
    A. Speed B. Hiking C. Direction D. Magnetic field
AnswerCorrect: Option C.
  1. Select related letter: BF : JP :: CI : ?
    A. KR B. LR C. KS D. LS
AnswerCorrect: Option A. +8,+8.
  1. If 1 = 3, 2 = 5, 3 = 7, then 4 = ?
    A. 7 B. 9 C. 11 D. 13
AnswerCorrect: Option B. 2n+1.
  1. Count triangles in given figure:
    A. 12 B. 14 C. 16 D. 18
AnswerCorrect: Option C.
  1. Statement: A ≥ B = C < D; Conclusion:
    I. A > D II. B < D
    A. Only I B. Only II C. Both D. Neither
AnswerCorrect: Option B.
  1. If P is brother of Q, R is sister of P, S is brother of T, T is daughter of Q, then how is P related to S?
    A. Uncle B. Father C. Grandfather D. Brother
AnswerCorrect: Option A.
  1. Which sequence of signs replaces stars to make true: 16 * 4 * 2 * 3 = 11
    A. – × + B. + – × C. × – + D. + × –
AnswerCorrect: Option A. 16–4×2+3=16–8+3=11.
  1. In alphabet series, which comes next: AB, DEF, HIJK, ?, UVWXYZ
    A. MNOPQ B. LMNOP C. MNOP D. NOPQR
AnswerCorrect: Option A. Increasing letter count by 1.

General Science (25)

  1. The unit of electric charge is:
    A. Volt B. Ampere C. Coulomb D. Ohm
AnswerCorrect: Option C.
  1. Which organelle is called “powerhouse of cell”?
    A. Ribosome B. Mitochondrion C. Golgi body D. Lysosome
AnswerCorrect: Option B.
  1. The pH of human blood is approximately:
    A. 6.8 B. 7.0 C. 7.4 D. 8.0
AnswerCorrect: Option C.
  1. Which gas is used in filling balloons for meteorological observations?
    A. Hydrogen B. Helium C. Neon D. Nitrogen
AnswerCorrect: Option A. (Though helium safer, hydrogen still used in sondes.)
  1. The process of conversion of sugar into alcohol is:
    A. Glycolysis B. Fermentation C. Saponification D. Esterification
AnswerCorrect: Option B.
  1. Which mirror is used as rear-view mirror in vehicles?
    A. Plane B. Convex C. Concave D. Cylindrical
AnswerCorrect: Option B.
  1. The speed of sound is maximum in:
    A. Air B. Water C. Steel D. Vacuum
AnswerCorrect: Option C. Solids > liquids > gases.
  1. Which vitamin is water-soluble?
    A. A B. D C. E D. C
AnswerCorrect: Option D.
  1. The isotope used in cancer treatment is:
    A. I-131 B. Co-60 C. U-238 D. C-14
AnswerCorrect: Option B. Cobalt-60.
  1. The SI unit of luminous intensity is:
    A. Lux B. Candela C. Lumen D. Watt
AnswerCorrect: Option B.
  1. Which part of brain controls heartbeat?
    A. Cerebrum B. Medulla C. Cerebellum D. Hypothalamus
AnswerCorrect: Option B.
  1. The reaction of an acid with base is called:
    A. Oxidation B. Neutralisation C. Reduction D. Hydrolysis
AnswerCorrect: Option B.
  1. Which planet has maximum number of known natural satellites (2024)?
    A. Jupiter B. Saturn C. Uranus D. Neptune
AnswerCorrect: Option B. 146 moons (Jupiter 95).
  1. The process of photosynthesis converts light energy to:
    A. Heat B. Kinetic C. Chemical D. Electrical
AnswerCorrect: Option C.
  1. A lightning conductor works on the principle of:
    A. Induction B. Conduction C. Discharge through sharp points D. Capacitance
AnswerCorrect: Option C.
  1. Which metal is liquid at room temperature?
    A. Sodium B. Gallium C. Mercury D. Bismuth
AnswerCorrect: Option C.
  1. The deficiency of iodine causes:
    A. Anaemia B. Goitre C. Scurvy D. Rickets
AnswerCorrect: Option B.
  1. The filament of electric bulb is made of:
    A. Copper B. Tungsten C. Nichrome D. Aluminium
AnswerCorrect: Option B.
  1. Which ray is used in RFID technology?
    A. Gamma B. UV C. Infrared D. Radio waves
AnswerCorrect: Option D.
  1. The atomic number of carbon is:
    A. 4 B. 6 C. 12 D. 14
AnswerCorrect: Option B.
  1. Which disease is caused by a protozoan?
    A. Malaria B. Tuberculosis C. Cholera D. Tetanus
AnswerCorrect: Option A.
  1. The escape velocity from Earth is approximately:
    A. 7.9 km/s B. 11.2 km/s C. 16.7 km/s D. 3.1 km/s
AnswerCorrect: Option B.
  1. Which polymer is used to make non-stick pans?
    A. PVC B. Teflon C. Bakelite D. Nylon
AnswerCorrect: Option B.
  1. The colour of sky is blue due to:
    A. Reflection B. Refraction C. Scattering D. Dispersion
AnswerCorrect: Option C. Rayleigh scattering.
  1. The hormone that regulates blood sugar level is:
    A. Insulin B. Adrenaline C. Thyroxine D. Testosterone
AnswerCorrect: Option A.