IIT 1995

C.

i had GUESSED that..but ans given is A.

In option C..the reactants are heated to get Cl₂ so that's why Cl₂ cannot be obtained at room temperature by this reaction..
Moreover KMnO₄ is good oxidising agent as compared to MnO₂

any good oxidising agent can be used to convert conc HCl into Cl₂ e.g. KMnO₄,K₂Cr₂O₇,PbO₂,Pb₃O₄,MnO₂

ok
@ronald after the post by govind i think the answer is rite

@ arka...see the condition..conversion shud be possible at room temperature...

ya u r right govind,agreed totally with ur ans in #5
just gave some general info[1]