Dear Himanshu,
It is good to hear that you are preparing for jee exams and hope these books might help you out.
MATHS-Problems Plus for IIT Jee by Asit Das Gupta is good and you can use cengage publication books for previous iit problems and for different pattern of question(Try to avoid watching solutions if you buy cengage)
PHYSICS-Follow every concept from HC Verma first because it the best book for concepts and then go for
books like Arihant`s DC PANDEY books for each branch. And I E Rhodov can be solved during
your revision time. Dont go for cengage for physics as the concepts are confusing. Try to solve as
many problems as you can from those books.
CHEMISTRY-For physical chemistry, buy GRB OP Tandon book for concepts and for solving problems buy GRB A S Singh book. For inorganic chemstry, learn concepts from J D LEE simplified version book for iit(mug up as much as you can for inorganic chemistry as it is scoring subject)and buy GRB K Kumar book for solving problems .For oraganic chemistry, buy ARIHANT`S Ranjeeth Shahi for organic chemistry for concepts and GRB Himanshu Pandey for organic chemistry solving problems.(*second books in chemistry for each branch contain only problems and their key.)
All the best for your preparation.Keep focused. Any doubt you can ask me.