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Which one of the following gives iodofor...

Which one of the following gives iodoform test?

A

Formaldehyde

B

Ethyl alcohol

C

Benzyl alcohol

D

Benzaldehyde

Text Solution

Verified by Experts

The correct Answer is:
B

The compound having `alpha`-hydrogen will give iodoform test. Ethyl alcohol and secondary alcohols also give positive iodoform test because by the action of halogens in alkaline medium, they are oxidised to acetaldehyde and methyl ketones respectively.
`CH_3CH_2OH underset(NaOH)overset(I_2)to CH_3CHO underset(NaOH)overset(I_2)to CI_3CHO underset(NaOH)overset(H_2O)to CHI_3+HCOONa`
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