1.

C_6H_5CH=CHCHO overset(X)to C_6H_5CH=CHCH_2OH In the above sequence X can be :

Answer»

`H_2//Ni`
`NaBH_4`
`K_2Cr_2O_7//H^+`
Both (a) and (b)

Solution :`NaBH_4` SELECTIVELY reduces the aldehyde group to ALCOHOL without AFFECTING DOUBLE bond in a organic compound. So, X is `NaBH_4`


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