1.

The best method to purify impure acetone is

Answer»

`CH_(3)COCH_(3)+HCl to CH_(3) -overset(OH)overset(|)underset(Cl)underset(|)C-CH_(3) overset("heat")to CH_(3)COCH_(3)`
`CH_(3)COCH_(3)+NaHSO_(3) to CH_(3)-overset(OH)overset(|)underset(CH_(3))underset(|)C-SO_(3)Na overset(Na_(2)CO_(3))to CH_(3)COCH_(3)`
`CH_(3)COCH_(3)+HCNto CH_(3)-overset(OH)overset(|)underset(CN)underset(|)C-CH_(3) overset(HOH)toCH_(3)COCH_(3)`
`CH_(3)COCH_(3)+H_(2)SO_(4) to CH_(3)-overset(OH)overset(|)underset("OSO"_(3)H)underset(|)C-CH_(3) to overset("heat")to CH_(3)COCH_(3)`

ANSWER :B


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