MCQ
Benzaldehyde and acetaldehyde can be differentiated by
- A$HCN$
- B$N{H_2}OH$
- C$Hydrazine$
- ✓$NaOH$ solution

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$PCl _{3}+ H _{2} O \longrightarrow A + HCl$
$A + H _{2} O \longrightarrow B + HCl$
number of ionisable protons present in the product $B\,.....$