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
Show 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
Show 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
Show 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
Show AnswerCorrect: Option C. The Sundarbans delta shared by India & Bangladesh.
  1. “Project Tiger” was launched in:
    A. 1970 B. 1973 C. 1980 D. 1992
Show AnswerCorrect: Option B. 1 April 1973 from Corbett NP.
  1. The currency of Argentina is:
    A. Peso B. Real C. Dollar D. Euro
Show AnswerCorrect: Option A. Argentine Peso.
  1. Which Indian state has the longest coastline?
    A. Tamil Nadu B. Maharashtra C. Gujarat D. Andhra Pradesh
Show 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
Show 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 %
Show 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
Show 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
Show 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
Show 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
Show 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
Show 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
Show 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
Show 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
Show 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
Show AnswerCorrect: Option C. 61st Constitutional Amendment 1988.
  1. India’s first “Janaushadhi Kendra” was opened in:
    A. Delhi B. Punjab C. Maharashtra D. Rajasthan
Show 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
Show 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
Show 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
Show 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
Show 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
Show 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
Show 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
Show AnswerCorrect: Option C. 2³×3²×5 = 360.
  1. If 3^(x+2) = 81, then x equals:
    A. 1 B. 2 C. 3 D. 4
Show 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
Show 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 %
Show 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
Show 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
Show 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
Show 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 %
Show 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
Show 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
Show 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
Show 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
Show 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
Show 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
Show 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
Show 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
Show 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°
Show 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
Show 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
Show 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
Show 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
Show 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
Show 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
Show 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
Show 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
Show 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
Show AnswerCorrect: Option D. Others are consecutive perfect squares.
  1. Complete series: 2, 5, 10, 17, 26, ?
    A. 35 B. 36 C. 37 D. 38
Show AnswerCorrect: Option C. +3,+5,+7,+9,+11 → 37.
  1. If BREAD = 25, then COFFEE = ?
    A. 36 B. 49 C. 64 D. 81
Show 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
Show 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
Show 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
Show 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
Show 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
Show AnswerCorrect: Option C.
  1. If 15 Aug 2021 was Sunday, 15 Aug 2022 was:
    A. Monday B. Tuesday C. Sunday D. Saturday
Show 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
Show 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
Show 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
Show AnswerCorrect: Option B.
  1. If 4×5 = 24, 6×7 = 42, then 8×9 = ?
    A. 72 B. 70 C. 80 D. 64
Show 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
Show AnswerCorrect: Option A.
  1. Word cannot be formed from “TRANSPORT”:
    A. SPORT B. TRAP C. ROAST D. TRANT
Show 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
Show 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
Show AnswerCorrect: Option B.
  1. Find analogous pair: Odometer : Distance :: Compass : ?
    A. Speed B. Hiking C. Direction D. Magnetic field
Show AnswerCorrect: Option C.
  1. Select related letter: BF : JP :: CI : ?
    A. KR B. LR C. KS D. LS
Show AnswerCorrect: Option A. +8,+8.
  1. If 1 = 3, 2 = 5, 3 = 7, then 4 = ?
    A. 7 B. 9 C. 11 D. 13
Show AnswerCorrect: Option B. 2n+1.
  1. Count triangles in given figure:
    A. 12 B. 14 C. 16 D. 18
Show 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
Show 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
Show AnswerCorrect: Option A.
  1. Which sequence of signs replaces stars to make true: 16 * 4 * 2 * 3 = 11
    A. – × + B. + – × C. × – + D. + × –
Show 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
Show 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
Show AnswerCorrect: Option C.
  1. Which organelle is called “powerhouse of cell”?
    A. Ribosome B. Mitochondrion C. Golgi body D. Lysosome
Show AnswerCorrect: Option B.
  1. The pH of human blood is approximately:
    A. 6.8 B. 7.0 C. 7.4 D. 8.0
Show AnswerCorrect: Option C.
  1. Which gas is used in filling balloons for meteorological observations?
    A. Hydrogen B. Helium C. Neon D. Nitrogen
Show 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
Show AnswerCorrect: Option B.
  1. Which mirror is used as rear-view mirror in vehicles?
    A. Plane B. Convex C. Concave D. Cylindrical
Show AnswerCorrect: Option B.
  1. The speed of sound is maximum in:
    A. Air B. Water C. Steel D. Vacuum
Show AnswerCorrect: Option C. Solids > liquids > gases.
  1. Which vitamin is water-soluble?
    A. A B. D C. E D. C
Show AnswerCorrect: Option D.
  1. The isotope used in cancer treatment is:
    A. I-131 B. Co-60 C. U-238 D. C-14
Show AnswerCorrect: Option B. Cobalt-60.
  1. The SI unit of luminous intensity is:
    A. Lux B. Candela C. Lumen D. Watt
Show AnswerCorrect: Option B.
  1. Which part of brain controls heartbeat?
    A. Cerebrum B. Medulla C. Cerebellum D. Hypothalamus
Show AnswerCorrect: Option B.
  1. The reaction of an acid with base is called:
    A. Oxidation B. Neutralisation C. Reduction D. Hydrolysis
Show AnswerCorrect: Option B.
  1. Which planet has maximum number of known natural satellites (2024)?
    A. Jupiter B. Saturn C. Uranus D. Neptune
Show AnswerCorrect: Option B. 146 moons (Jupiter 95).
  1. The process of photosynthesis converts light energy to:
    A. Heat B. Kinetic C. Chemical D. Electrical
Show AnswerCorrect: Option C.
  1. A lightning conductor works on the principle of:
    A. Induction B. Conduction C. Discharge through sharp points D. Capacitance
Show AnswerCorrect: Option C.
  1. Which metal is liquid at room temperature?
    A. Sodium B. Gallium C. Mercury D. Bismuth
Show AnswerCorrect: Option C.
  1. The deficiency of iodine causes:
    A. Anaemia B. Goitre C. Scurvy D. Rickets
Show AnswerCorrect: Option B.
  1. The filament of electric bulb is made of:
    A. Copper B. Tungsten C. Nichrome D. Aluminium
Show AnswerCorrect: Option B.
  1. Which ray is used in RFID technology?
    A. Gamma B. UV C. Infrared D. Radio waves
Show AnswerCorrect: Option D.
  1. The atomic number of carbon is:
    A. 4 B. 6 C. 12 D. 14
Show AnswerCorrect: Option B.
  1. Which disease is caused by a protozoan?
    A. Malaria B. Tuberculosis C. Cholera D. Tetanus
Show 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
Show AnswerCorrect: Option B.
  1. Which polymer is used to make non-stick pans?
    A. PVC B. Teflon C. Bakelite D. Nylon
Show AnswerCorrect: Option B.
  1. The colour of sky is blue due to:
    A. Reflection B. Refraction C. Scattering D. Dispersion
Show AnswerCorrect: Option C. Rayleigh scattering.
  1. The hormone that regulates blood sugar level is:
    A. Insulin B. Adrenaline C. Thyroxine D. Testosterone
Show AnswerCorrect: Option A.