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Acetaldehyde and acetone can be identified by

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Schiff’s reagent

2,4-DNP test

Tollen’s reagent

Lucas test

answer is B.

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Detailed Solution

2,4-DNP test is used to identify >C=O group. It gives addition reaction with carbonyl compounds. So, it can be used to identify both aldehyde and ketone. It gives yellow/orange ppt. with carbonyl containing compounds.

Schiff's test is not given by ketones, only aldehydes give Schiff's test.

Tollen's reagents gives silver mirror only to aldehyde not to ketone.

Lucas test is the test used for the detection of alcohol. The Lucas tests distinguish between primary, secondary, and tertiary alcohols.

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