22-05-10 : Find the products

Nope that ain't it.....try again :P
Hint : The ketone is hindered.

Yep that's the right path...continue!

Hmm...unless you show me your entire working, I cannot judge. Besides the product is incorrect.

A itself is wrong....but an aldol cyclization does come later :P

No.. A is correct...but it is mostly wrong. The general idea is correct however. But after LDA it all goes wrong. PCl₅ has other uses, apart from nucleophilic substitution.
In addition the group you have substituted doesn't exist when you try to substitute it.

Here is the answer then...

Go to http://targetiit.com/iit-jee-forum/posts/a-f-15268.html for the explanation.