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Solution


Q.

“P” is an optically active compound with molecular formula C6H12O. When “P” is treated with 2,4-dinitrophenylhydrazine, it gives a positive test. However, in presence of Tollens reagent, “P” gives a negative test. Predict the structure of “P”.            [2025]
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Ans.

(2)

Compound Optical activity Tollen’s test (given by aldehydes) 2,4 DNP test (given by aldehydes and ketones)
Inactive
Negative Positive
Active Negative Positive
Active Positive Positive
Inactive Negative Positive