Above compounds can be differentiated by which of the following reagent :

2, 4 DNP (Brady reagent )

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Tollen's reagent

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Lucas reagent

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All of the above

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Solution

The correct option is B Tollen's reagent
Hemiacetal give positive Tollen's test.
Here, hemiacetal is oxidised to aldehyde group
Hence, both can be differentiated by Tollen's reagent.

Lucas reagent is used to defferentiate alcohols.
2, 4-DNP is used to identify aldehyde and ketones.

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