, on reaction with HBr and peroxide gives:

An alkyl halide (X) on reaction with ethanolic sodium hydroxide forms an alkene (Y) which on further reaction with HBr gives the same alkyl halide.The alkene (Y) on reaction with HBr/ peroxide followed by reaction with Mg metal followed by reaction with HCN produces an aldehyde (Z).Z is :

3-phenyl propene on reaction with HBr in the presence of peroxide, the major product formed is:

The reaction of with HBr gives

The reaction of with HBr gives

The reaction of with HBr gives

The reaction of with HBr gives mainly:

The reaction of with HBr gives: