Chemistry Practice Question and Answer
8 4 Q:
63aaa987afa10611461dd172 4 Q:
63aaa9205770eb565d50124f 4 Q:
6389b84734f83f147273cfcb 4 Q:
64242bd8dcb650c14569c06c 4 Q:
6389c1e8c878936066e77493 4 Q:
6491958013e8bde0322b983e Answer : 3. "combination"
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6389bb3dc878936066e74a7b 4 Q:
6389b6699ebad6607b7f07fe
Q:Read the following questions carefully and answer them.
Curd is sour due to presence of
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63aaa987afa10611461dd172- 1Tartaric acidfalse
- 2Lactic acidtrue
- 3Acetic acidfalse
- 4Oxalic acidfalse
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Answer : 2. " Lactic acid "
Q:Read the following questions carefully and answer them.
Cloud is a colloidal dispersion of
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63aaa9205770eb565d50124f- 1Air in a dispersion medium of waterfalse
- 2Fog in a dispersion medium of waterfalse
- 3Mist in a dispersion medium of airfalse
- 4Water drops in a dispersion medium of airtrue
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Answer : 4. "Water drops in a dispersion medium of air"
Q: Which fibre is used for making bristles of brushes.
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6389b84734f83f147273cfcb- 1Kevlarfalse
- 2Nylon-66true
- 3Terylenefalse
- 4Lexanfalse
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Answer : 2. "Nylon-66"
Q: Which of the following is considered to be the fifth state of matter?
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64242bd8dcb650c14569c06c- 1Bose-Einstein condensatetrue
- 2Plasmafalse
- 3Solidfalse
- 4Gasfalse
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Answer : 1. "Bose-Einstein condensate "
Q: Which is widely used in the plastic industry for manufacturing Bakelite?
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6389c1e8c878936066e77493- 1Ethyl Alcoholfalse
- 2Phenoltrue
- 3Ortho-Cresolfalse
- 4Catecholfalse
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Answer : 2. "Phenol"
Q: Burning of coal is a ______ reaction.
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6491958013e8bde0322b983e- 1displacementfalse
- 2decompositionfalse
- 3combinationtrue
- 4double displacementfalse
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Answer : 3. "combination"
Explanation :
1. The burning of coal is an example of a combination reaction (a combination).
2. When two or more elements combine to form a compound, it is called a combination reaction.
Q: Which among the following is false about natural rubber?
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6389bb3dc878936066e74a7b- 1It is an elastomerfalse
- 2It is a monomer of cis-isoprenefalse
- 3Natural rubber is a polymer of chlororprenetrue
- 4It is heated with sulphur compounds to improve its propertiesfalse
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Answer : 3. "Natural rubber is a polymer of chlororprene"
Q: What is the bond between two amino acids in a protein called?
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6389b6699ebad6607b7f07fe- 1Ester bondfalse
- 2Glycosidic bondfalse
- 3Peptide bondtrue
- 4Phosphodiester bondfalse
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Answer : 3. "Peptide bond"
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