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Question

To differentiate between pentan-2-one and pentan-3-one a test is carried out. Which of the following is the correct answer?

A
Pentan-2-one will give silver mirror test
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B
Pentan-2-one will give iodoform test
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C
Pentan-3-one will give iodoform test
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D
None of these
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Solution

The correct option is B Pentan-2-one will give iodoform test
Only methyl ketone group gives positive iodoform so compound pentan-2-one will give iodoform test and pentan-3-one will not give.

silver mirror is only valid for aldehyde group, not for ketone.

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