Propanaldehyde and propanone can be distinguished by.

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$N H_{2} O H$

$R - M g - X$

Tollens’ reagent

2, 4 – D.N.P

answer is A.

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Detailed Solution

The keto form of I and II respectively are $C H_{3} - C H_{2} - C H O$ and $C H_{3} - \overset{| \overset{O}{|}}{C} - C H_{3}$ . An aldehyde and ketone can be distinguished by Tollen’s reagent.

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