Science GK Practice Question and Answer
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Q: What is a mixture of potassium nitrate powdered charcoal and sulphur called? 1461 05c2dbd92bc106c237a22c18a
5c2dbd92bc106c237a22c18a- 1paintfalse
- 2aluminiumfalse
- 3brassfalse
- 4gun powdertrue
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Answer : 4. "gun powder"
Q: What type of waves are there in Radar?
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5f912f099e18f97b7040eacf- 1electric wavesfalse
- 2electromagnetic wavestrue
- 3Sound wavesfalse
- 4None of the abovefalse
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Answer : 2. "electromagnetic waves"
Q: Atomic number is equal to 1437 05c2dc20bf11ee42b64688fe9
5c2dc20bf11ee42b64688fe9- 1Number of electronsfalse
- 2Numbers of protonstrue
- 3Number of nutronfalse
- 4Total number of protons and neutronsfalse
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Answer : 2. "Numbers of protons"
Q: In the nitrogen cycle, soil nitrates are converted into free nitrogen by whom?
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5f6046ec80a26b7dab001452- 1nitrifying bacteriafalse
- 2denitrifying bacteriatrue
- 3ammonifying bacteriafalse
- 4None of thesefalse
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Answer : 2. "denitrifying bacteria"
Q: Which gas is used in fire extinguishers ? 1406 15c2dc34c94bba731de8f0a4f
5c2dc34c94bba731de8f0a4f- 1Carbon dioxidetrue
- 2Nitrogen oxidefalse
- 3Carbon monoxidefalse
- 4Sulpher dioxidefalse
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Answer : 1. "Carbon dioxide"
Q: capacitor is a of small size but high capacity?
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5ef44ae3f2ebd073795bbd97- 1mica capacitortrue
- 2electrolytic capacitorsfalse
- 3Sirasic capacitorfalse
- 4Paper capacitorfalse
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Answer : 1. "mica capacitor"
Q: Nail polish remover contains ? 1399 05c2dbdbcbc106c237a22c18f
5c2dbdbcbc106c237a22c18f- 1benzenefalse
- 2acetic acidfalse
- 3acetonetrue
- 4petroleum etherfalse
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Answer : 3. "acetone"
Q: The main reason why the sky appears blue?
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5f912f5a7793eb35d72d8391- 1Sunlight is bluefalse
- 2Scattering of solar rays by particles of dust etc. present in the atmospheretrue
- 3light reflectionfalse
- 4light refractionfalse
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Answer : 2. "Scattering of solar rays by particles of dust etc. present in the atmosphere"
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