Can we convert ethanol to propanenitrile in the following way

CH3-CH2OH +HBr------PEROXIDE---> CH3CH2Br + H2O

​CH3CH2Br ----aq.KOH/KCN--------> CH2CH2CN + KBr

PLZ REPLY FAST

Method given by you is correct but the reaction conditions are wrong. In first reaction you have used peroxide which is wrong instead of it there should be ZnCl₂ and in the second reaction which is nucleophilic substitution reaction alcohlic solution of KCN is used not aqueous solution. The reaction will be as follows:
CH₃CH₂OH   +   HBr    $\stackrel{{\text{ZnCl}}_2}{\to }$  CH₃CH₂Br   +   H₂O

​CH₃CH₂Br  +   alc.KCN   →    CH₃CH₂CN   +   KBr