Basic Science Practice Question and Answer
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Q: What is the main factor of rust in iron?
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601401d65beea84b8ecebd7c- 1oxygentrue
- 2Hydrogenfalse
- 3Nitrogenfalse
- 4Neonfalse
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Answer : 1. "oxygen"
Q: Which substance is added to make natural rubber hard and bouncy?
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611b6423dc4e2547a1c91bd7- 1Petrol Jellyfalse
- 2sulfuric acidfalse
- 3sulfurtrue
- 4Spongefalse
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Answer : 3. "sulfur"
Q: By which process oil is converted into Vegetable Ghee?
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611b61d56d0fd147810fb1f1- 1Hydrogenationtrue
- 2Distillationfalse
- 3Oxidationfalse
- 4Reductionfalse
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Answer : 1. "Hydrogenation"
Q: Solute can be separated from solution?
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611b60d6dc4e2547a1c9191e- 1filtrationfalse
- 2evaporationtrue
- 3Decantationfalse
- 4sedimentationfalse
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Answer : 2. "evaporation"
Q: Nucleopolyhedro virus (NPV) is used in biological control?
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604de9b5e7f3ff5d8f662666- 1For gram bee borertrue
- 2For paddy-scented bugfalse
- 3For sugarcane pyrillafalse
- 4For all thesefalse
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Answer : 1. "For gram bee borer"
Q: What is the range of the intensity scale used in measuring earthquakes?
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60927580cc29175f0f8792dc- 11 to 7false
- 21 to 12true
- 31 to 15false
- 41 to 5false
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Answer : 2. "1 to 12 "
Q: In a refrigerator; cooling is produced by–
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601267ccaf82aa3010a76792- 1the ice which deposits in the freezerfalse
- 2the evaporation of a volatile liquidtrue
- 3the sudden expansion of a compressed gasfalse
- 4None of thesefalse
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Answer : 2. "the evaporation of a volatile liquid"
Q: Which of the following grain was first used by human?
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60ba03faa906b340d16acbc2- 1Ragifalse
- 2Wheattrue
- 3Barleyfalse
- 4Oatfalse
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Answer : 2. "Wheat"
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