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Organic chemistry
5 Class 10 Chemistry questions with answers and explanations.
Printable worksheet with answer key
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Organic compounds always contain:
- 1 Sulphur
- 2 Carbon
- 3 Oxygen
- 4 Nitrogen
Show answer
Correct answer: Carbon
Carbon is the element common to all organic compounds.
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Which of these is a functional group of alcohols?
- 1 -CHO
- 2 -NH2
- 3 -OH
- 4 -COOH
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The functional group of carboxylic acids is:
- 1 -COOH
- 2 -CO-
- 3 -CHO
- 4 -OH
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Compounds with the same formula but different structures are called:
- 1 Isotopes
- 2 Polymers
- 3 Isomers
- 4 Allotropes
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Ethanol has the formula:
- 1 C2H6
- 2 CH3OH
- 3 CH3COOH
- 4 C2H5OH