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Question 52

Both acetaldehyde and acetone (individually) undergo which of the following reactions? A. Iodoform Reaction B. Cannizaro Reaction C. Aldol Condensation D. Tollen's Test E. Clemmensen Reduction Choose the correct answer from the options given below:

We need to identify reactions that both acetaldehyde ($$CH_3CHO$$) and acetone ($$CH_3COCH_3$$) undergo individually.

A. Iodoform Reaction:

Both acetaldehyde and acetone have the $$CH_3CO-$$ group (methyl ketone/methyl aldehyde). Both undergo the iodoform reaction to give $$CHI_3$$. YES for both.

B. Cannizzaro Reaction:

Cannizzaro reaction requires aldehydes without alpha-hydrogen. Acetaldehyde has alpha-hydrogens ($$CH_3$$ group), so it does NOT undergo Cannizzaro reaction. Instead, it undergoes aldol condensation. Acetone also has alpha-hydrogens and does not undergo Cannizzaro reaction. NO for both.

C. Aldol Condensation:

Both acetaldehyde and acetone have alpha-hydrogens and undergo aldol condensation in the presence of dilute base. YES for both.

D. Tollen's Test:

Tollen's test (silver mirror test) is specific to aldehydes. Acetaldehyde gives a positive test, but acetone does not. NO (not both).

E. Clemmensen Reduction:

Clemmensen reduction ($$Zn-Hg/HCl$$) reduces the carbonyl group to $$CH_2$$. Both aldehydes and ketones undergo this reduction. YES for both.

The reactions common to both are A, C, and E. The answer is Option C) A, C and E Only.

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