Basic Science Practice Question and Answer
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Q: Which gas is used to purify pond water in cities?
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601401905beea84b8ecebc42- 1Sulfur dioxidefalse
- 2Chlorinetrue
- 3Nitrogenfalse
- 4Ammoniafalse
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Answer : 2. "Chlorine"
Q: What is Marble?
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6014014865f047590371ed51- 1Shalefalse
- 2Neissfalse
- 3Lime Stonetrue
- 4Sand Stonefalse
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Answer : 3. "Lime Stone"
Q: The rolling ball stops itself after rolling away for some reason, which of the following reasons?
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601401075beea84b8eceadc3- 1Frictional forcetrue
- 2gravityfalse
- 3Inertiafalse
- 4None of the abovefalse
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Answer : 1. "Frictional force"
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: Cooking vessels have wooden or bakelite handles because–
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601263178f4dda4a277d0e20- 1the handle must be strongfalse
- 2wood and bakelite are bad conductors of heattrue
- 3the handle should be attractivefalse
- 4None of the abovefalse
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Answer : 2. "wood and bakelite are bad conductors of heat"
Q: Transboundary pollution (or) Acid rain is caused by–
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6012401a178b94051cee4b04- 1Hydrocarbonfalse
- 2Carbon monoxidefalse
- 3Carbon dioxidefalse
- 4Nitrogen oxide and sulphur dioxidetrue
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Answer : 4. "Nitrogen oxide and sulphur dioxide"
Q: Blood group was discovered by -
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600aaf7f1187ab38691f5b09- 1Karl Landsteinertrue
- 2Pavlovfalse
- 3Alexander Flemingfalse
- 4William Harveyfalse
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Answer : 1. "Karl Landsteiner "
Q: Potato is a modified from of-
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60013d55c3affd2d6985d6e7- 1Rootfalse
- 2Stemtrue
- 3Fruitfalse
- 4Leaffalse
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Answer : 2. "Stem"
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