Which of the following pairs can be distinguished by sodium hypoiodite?

Options

A. `CH_(3)CHO` and `CH_(3)COCH_(3)`
B. `CH_(3)CH_(2)CHO` and `CH_(3)COCH_(3)`
C. `CH_(3)CH_(2)OH` and `CH_(3)CH_(2)CHOHCH_(3)`
D. `CH_(3)OH` and `CH_(3)CH_(2)CHO`

Answer

B

Explanation

Aldehydes and ketones having at least one methyl group linked to carbonyl carbon atom gives this test. So, here in option (b) ketone is having `(CH_(3)CO-)` group and the other is having `(CH_(3)CH_(2)overset(O)overset(||)(C )-)` group which do not give hypoiodite test. So thus they can be distinguished.