get ncert books. they are the best referred books fro iit.
						

							
these books are sufficient enough to crack iit with a good rank ,  but if u hav time then solve arihant DC pandey for physics,its a good book and based on  iit jee pattern , there are many conceptual points which are given seperately after each topic, so i suggest u to buy this book ....
						

							
Believe me they are sufficient.
Don't burden yourself with too much books.
Otherwise u will end up getting nothing.
Just follow them thorughly.
All the Best...........................
						

							
yes...it is sufficient..you should not follow books that other people says...instead refer books from which your concepts are cleared well...you should remember concepts and formulas because as i know many people refer lots of books and books and they becomes so much confused that they are ended up with no good.......if u will solve each and every problems of hc verma then u can score good marks in physics in iit-jee......for chemistry ncert is best but some formulas and concepts are not given in iit for that topics download syllabus for iit and see that all topics are covered...........