The reaction of `CH_(3)CH=CHCHO` with `NaBH_(4)` gives

The reaction of C_(6)H_(5)CH=CHCHO with NaBH_(4) gives:

The reaction of C_(6)H_(5)CH=CHCHO with LiAlH_(4) gives :

The reaction of CH_(3)CH=CH- with HBr gives :

The reaction of CH_(3)CH = with HBr gives

The end product (Z) in the given sequence of reaction is CH_(3)CH=CHCHO overset(NaBH_(4))toXoverset(HCl)underset(ZnCl_(2))toY overset((i)KCN)underset((ii)H+)toZ

In the reaction CH_(3)CH=CH_(2)underset((2)NaBH_(4))overset((1)(CH_(3)COO)_(2)Hg,H_(2)O)rarr The product is obtained is