1.

Compound (X) with molecular formula C_(3)H_(8)O is treated with acidifiedpotassium dichromate to forma product(Y) with molecularformula C_(3)H_(6)O. (Y) does not form a shining silver mirror on warming with ammoniacal AgNO_(3). (Y) when treated with an aqueous solution ofNH_(2)CONHNH_(2).HCland sodium acetate, gives a product (Z). The structure of (Z) is

Answer»

`CH_(3)CH_(2)CH=N NHCONH_(2)`
`(CH_(3))_(2)C=N NHCONH_(2)`
`(CH_(3))_(2)C=NCONHNH_(2)`
`CH_(3)CH_(2)CH=NCONHNH_(2)`

Solution :`{:(CH_(3)-overset(H)overset(|)underset((X))underset(CH_(3))underset(|)C-OH overset(K_(2)Cr_(2)O_(7))underset(H^(+))to CH_(3)-underset((Y))underset(CH_(3))underset(|)C=O),(""underset(CH_(3)COONa)underset(+)underset(NH_(2)CONHNH_(2)*HCl)(" ")darr),(""(CH_(3))_(2)Cunderset((Z))(=N N)HCONH_(2)):}`


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