Basic Science Practice Question and Answer
8 Q: The chemical name of Vitamin C is-
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5f87ef5b58d85e164c53e982- 1Nitric acidfalse
- 2Oxalic acidfalse
- 3Citric acidfalse
- 4Ascorbic acidtrue
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Answer : 4. "Ascorbic acid"
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 of the following is not a natural polymer?
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5f61ca5b8561dc09cc77ffcc- 1Woolfalse
- 2Leatherfalse
- 3Nylontrue
- 4Silkfalse
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Answer : 3. "Nylon"
Explanation :
The correct answer is the Glyptal. The term "natural polymers" refers to compounds that are produced naturally. Glyptal is a synthetic polymer and does not exist in nature. The polymer substance formed from glycerol and phthalic acid is known commercially as glyptal.
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: Vegetable oils are converted into ghee?
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5f91021d7793eb35d72c61b3- 1Heat treatmentfalse
- 2hydrogenationtrue
- 3oxygenfalse
- 4by enzymesfalse
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Answer : 2. "hydrogenation"
Q: The pigment that gives color to human skin is-
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5f86b534dcf12a01a141fc4f- 1Lysozymefalse
- 2Epidermisfalse
- 3Melanintrue
- 4Calaninfalse
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Answer : 3. "Melanin "
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: Embryos of Tritium aestivum have a chromosome number?
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604de8a0e147c16b2869ac67- 144false
- 263true
- 365false
- 467false
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