Class 12 Chemistry · Chapter 7 · Test 2
Carboxylic Acids
50 MCQs
50 questions · 45 min · 50 marks
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Sample questions
The first 5 of 50. Try each one, then tap to see the answer.
Question 1
The functional group of carboxylic acids is:
- A-CHO
- B-COOH
- C-CO-
- D-COCl
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Answer: B
Carboxylic acids contain the carboxyl group -COOH.
Question 2
Ethanoic acid is found in:
- AVinegar
- BAnt stings
- CRancid butter
- DBitter almonds
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Answer: A
Vinegar contains ethanoic (acetic) acid.
Question 3
Butanoic acid is responsible for the smell of:
- AVinegar
- BAnt stings
- CRancid butter
- DNail polish remover
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Answer: C
Butanoic (butyric) acid is found in rancid butter.
Question 4
Lower carboxylic acids have high boiling points because they:
- AAre ionic
- BHave high molecular masses
- CAre aromatic
- DForm hydrogen bonds
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Answer: D
Hydrogen bonding (including dimer formation) raises the boiling point.
Question 5
The melting point and boiling point of ethanoic acid are respectively:
- A118 °C and 17 °C
- B17 °C and 118 °C
- C77 °C and 118 °C
- D25 °C and 100 °C
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Answer: B
Ethanoic acid melts at 17 °C and boils at 118 °C.
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