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Q.

Which one of the following gives positive iodoform test and Tollens test 

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a

CH3CH2CH2CHO

b

C6H5−CO−CH3

c

C6H5−CHO

d

CH3−CHO

answer is C.

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Detailed Solution

Tollens' test used to distinguish aldehyde from ketones. Aldehyde gives Tollens' test. For Iodoform test, aldehyde must contain CH3−C||O−group. Among the given options, only CH3−CHO follows the two conditions.

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