Class 12 Chemistry · Chapter 6 · Test 1
Alcohols: Acidity and Synthesis
43 MCQs
43 questions · 39 min · 43 marks
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Sample questions
The first 5 of 43. Try each one, then tap to see the answer.
Question 1
Phenols are hydroxy compounds in which the -OH group is attached to:
- AAn aliphatic carbon
- BAn aryl (benzene ring) carbon
- CA carbonyl carbon
- DA nitrogen atom
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Answer: B
Alcohols have -OH on an aliphatic carbon while phenols have -OH on an aryl carbon.
Question 2
What is the general formula of alcohols?
- ARCHO
- BRCOOH
- CROH
- DR-O-R
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Answer: C
Alcohols are represented by ROH where R is an alkyl or aryl group.
Question 3
Methanol and ethanol are the first two members of the homologous series of:
- AMonohydric alcohols
- BPolyhydric alcohols
- CPhenols
- DEthers
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Answer: A
Each has one -OH group so they are monohydric alcohols.
Question 4
Ethane-1,2-diol (glycol) is classified as a:
- AMonohydric alcohol
- BPolyhydric alcohol
- CPhenol
- DTertiary monohydric alcohol
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Answer: B
It has two -OH groups so it is polyhydric (dihydric).
Question 5
How many -OH groups does glycerol (propane-1,2,3-triol) have?
- A1
- B2
- C3
- D4
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Answer: C
Glycerol has three hydroxyl groups.
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