Question

The structure of the starting compound P used in the reaction given below is:

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• A.
• B.
• C.
• D.

Answer 1

The correct option is B

The reagent 'NaOCl' is used for haloform reaction to give carboxylate ion followed by hydrolysis to give carboxylic acid.
Aldehydes and ketones having 3 $\alpha$-hydrogen atoms undergo haloform reaction with $NaOCl$.

Hence, option (b) is the correct answer.