Practice Question and Answer
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Q: Which of the following is used to increase the anti-explosive quality of petrol?
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60d85b3fbfe8b1471688c263- 1tetraethyl leadtrue
- 2trimethyl leadfalse
- 3triethyl leadfalse
- 4Tetramethyl leadfalse
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Answer : 1. "tetraethyl lead"
Q: Which of the following missile is a 'land to air' missile?
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60d85af642d10840013211ee- 1Trishultrue
- 2K-15 Sagarikafalse
- 3BrahMosfalse
- 4Agnifalse
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Answer : 1. "Trishul"
Q: Which particle is needed to continue the continuous process of uranium fission?
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60d85ab128d5b43fedb6192f- 1electronfalse
- 2Protonfalse
- 3Neutrontrue
- 4positronfalse
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Answer : 3. "Neutron"
Q: What planet is closest to the Sun?
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60d8594842d10840013210fc- 1Earthfalse
- 2Mercurytrue
- 3Marsfalse
- 4Venusfalse
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Answer : 2. "Mercury"
Q: Which metal is used to heat an electric iron?
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60d858fc28d5b43fedb6149d- 1Copperfalse
- 2Nichrometrue
- 3Zincfalse
- 4Tungstenfalse
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Answer : 2. "Nichrome"
Q: What is the approximate height of a synchronous satellite above the surface of the earth?
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60d858be42d1084001321074- 136,000 kmtrue
- 230,000 kmfalse
- 342,000 kmfalse
- 4none of thesefalse
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Answer : 1. "36,000 km"
Q: Which type of mirror is used in the headlights of vehicles?
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60d85877bfe8b1471688bfd7- 1plane mirrorfalse
- 2concave mirrorfalse
- 3convex mirrorfalse
- 4parabolic mirrortrue
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Answer : 4. "parabolic mirror"
Q: Which is the largest organ of the human body?
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60d85835bfe8b1471688bfaa- 1Heartfalse
- 2brainfalse
- 3livertrue
- 4kidneyfalse
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Answer : 3. "liver"
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