17)	When HCl gas is passed over propene in the presence of benzoyl peroxide, it gives (A) no reaction (B) n-propyl bromide (C) allyl chloride (D) 2-chloropropane

Explain the ans

hey geoff, 

if you check the Deviation from Markozonikoff'srule .The peroxide effect-Anti Markownikoff's addition: Kharasch (1933) observed that the addition of HBr to unsymmetrical alkenes in presence of organic peroxides takes place against the

Markownikoff's rule. For example, addition of HBr to propene in presence of peroxide gives 1-bromopropane as the major product. This is knozvn as peroxide effect or Kharasch effect.

The peroxide effect is only observed in case of HBr. It is found to be absent in the cases of HF, HCl and HI.

 that means the answer to your question is (A) no reaction.