actually, sir i m doing V.M.C corr. for iit-jee is it fine, or if not then wht book i shuld do for chemistry& maths

Dear Roy;

All books are good but the condition is that  that should be only for IITJEE , not for all exam. There is a big difference between JEE & others exams. Do not skip any concept/problem in a book and try to finish one book. do not wander in multiple books.I recommends books which are given in following links.

http://www.askiitians.com/Important-books-iit-jee.aspx

Please feel free to post as many doubts on our discussion forum as you can.
If you find any question Difficult to understand - post it here and we will get you the answer and detailed
solution very  quickly.
We are all IITians and here to help you in your IIT JEE  & AIEEE preparation.

All the best. 
Regards,
Askiitians Experts
Pramod Kumar
IITR Alumni