Science GK Practice Question and Answer
8 Q: Who invented television?
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6014085b2a5c813e157fa078- 1J.R. L. Bairdtrue
- 2Macmillanfalse
- 3James Wattfalse
- 4None of thesefalse
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Answer : 1. "J.R. L. Baird"
Q: When a man enters a dark room with light, he sees nothing for some time. Later he begins to appear, because?
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601404df2a5c813e157f5cce- 1The iris of his eye shrinkstrue
- 2The iris of his eye spreadsfalse
- 3The distance between the lens and retina of his eye increasesfalse
- 4The length of his eye lens increasesfalse
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Answer : 1. "The iris of his eye shrinks"
Q: Why are white dresses worn in summer?
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5f913083d6785c0fc0d91399- 1Bad absorbers of heat aretrue
- 2are cheapfalse
- 3are attractivefalse
- 4None of thesefalse
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Answer : 1. "Bad absorbers of heat are"
Q: Washing soda is ? 1455 05c2dbeeef11ee42b64688fcb
5c2dbeeef11ee42b64688fcb- 1sodium sulphitefalse
- 2sodium bicarbonatefalse
- 3sodium carbonatetrue
- 4sodium biosulphitefalse
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Answer : 3. "sodium carbonate"
Q: His melting point increasing the pressure on ice?
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5f9130427793eb35d72d84b4- 1will decreasetrue
- 2will increasefalse
- 3will be zerofalse
- 4will remain unchangedfalse
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Answer : 1. "will decrease"
Q: An aquatic plant was introduced to the US to remove pollution in Indian aquatic bodies as a troublesome weed. what is its name?
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5f6046a209624c19c5c13610- 1hawthornfalse
- 2Egiolpstrue
- 3hyacinthfalse
- 4Pistiafalse
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Answer : 2. "Egiolps"
Explanation :
So the correct answer is 'Eichhornia crassipes' An aquatic plant introduced from America to check pollution turned out to be a troublesome weed in Indian water bodies.
Q: The metal used to recover copper from a solution of copper sulphate is ? 1427 05c2dc31994bba731de8f0a4a
5c2dc31994bba731de8f0a4a- 1Nafalse
- 2Agfalse
- 3Hgfalse
- 4Fetrue
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Answer : 4. "Fe"
Q: From which source is the list of countries emitting carbon dioxide based on carbon dioxide emissions?
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5f60443d80a26b7dab000d1c- 1Burning of fossil fuelsfalse
- 2Cement Industryfalse
- 3Both of the abovetrue
- 4None of thesefalse
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Answer : 3. "Both of the above"
Explanation :
This is a list of sovereign states and territories by carbon dioxide emissions due to certain forms of human activity, based on the EDGAR database created by European Commission and Netherlands Environmental Assessment Agency.