161.A
12 Answers
161. has to be B... how is it A ?
initially wen A was a liquid .. it contributed to the vapour pressure.
then wen it turns into a solid...
it stops contributing to the vap pressure
upar se... it takes up some surface area of B and reduces its vapour pressure as well.
so how can it be A?
1@sky,
read this problem carefully,A completely polymerises to insoluble solid.
so,
vapor presurre=p°b*xsolvent
=200*4/5
=160
so,option a is correct.
1i am not going for JEE this year i have just passed XI.
but BEST OF LUCK TO YOU.