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In which of the following, the number of carbon atoms does not remain same when carboxylic acid is obtained by oxidation

1. CH3COCH3
2. CC13CH2CHO
3. CH3CH2CH2OH
4. CH3CH2CHO

Correct answer: CC13CH2CHO

Solution

When CC13CH2CHO is oxidized to a carboxylic acid, the trichloromethyl group (-CCl3) is hydrolyzed, leading to a loss of carbon atoms. This does not happen in the other options.

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