1.

An organiccompound X is oxidised by using acidified K_(2)Cr_(2)O_(7). The product obtained reacts with phenyl hydrazinebut does not answer silver mirror test . The sturcture of X is

Answer»

`CH_(3)COCH_(3)`
`(CH_(3))_(2)CHOH`
`CH_(3)CHO`
`CH_(3)CH_(2)OH`

SOLUTION :The oxidation product of X reacts with phenyl hydrazine thus it CONTAINS `GT C=O` group .The same product does not answer silver mirror test thus , it is a ketons, because only aldehydes GIVE this test.
Thus the compound X MUST be a `2^(@)`alcohol , as only secondary alcohols give ketones on oxidation and hence X is `(CH_(3))_(2)CHOH`.


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