Below are the lists of book which you can refer to for your iitjee preparation:

• Best Physics Books for IIT JEE Preparation:

Concepts of Physics by H. C. Verma
Fundamentals of Physics by Halliday, Resnick and Walker
Problems in General Physics by I. E. Irodov
University Physics by Freedman and Young
No other subject requires more thinking than Physics.

After you read the NCERT Physics, the next step is to start studying from H.C. Verma's book. At the end of each chapter there are lots of questions graded in difficulty level. There should be an honest attempt to solve each of them.

Simultaneously, Halliday, Resnick and Walker's book must be started. Within each chapter of the book there are some conceptual questions and one must make an all-out effort to answer each of them. This book has very high reputation worldwide.

I.E. Irodov's book is one of the toughest books in Physics. It is very useful for problems in Mechanics and Electromagnetism for the IIT JEE Preparation.

• Best Mathematics Books for IIT JEE Preparation:

Higher Algebra by Hall and Knight for Algebra
Coordinate Geometry by S.L. Loney
Differential and Integral Calculus by N. Piskunov
Calculus and Analytic Geometry by Thomas and Finney for Calculus
IIT Mathematics by M.L. Khanna
Course in Mathematics for IIT-JEE by Tata McGraw Hill publications
Problems Plus in IIT Mathematics by A Das Gupta
Trigonometry by S L Loney
Thomas and Finney's book is very basic but it's good for beginners starting out with Calculus. Very good geometrical interpretations of derivative etc. are there.

The books by Loney are all time international classics. Honest efforts should be made to solve the problems. The coordinate geometry book is really, really good. Many of the problems themselves are of IIT JEE standard.

Piskunov's book is basically a standard text book of calculus. It is important to solve challenging problems in Mathematics, one needs to practice as much as possible from the IIT Mathematics books by DasGupta and also by M.L. Khanna. There are a huge number of problems there.

• Best Chemistry Books for IIT JEE Preparation:

Chemistry is divided roughly into a) General Chemistry with a huge emphasis on Physical Chemistry, b) Organic Chemistry and c) Inorganic Chemistry.

University Chemistry by Freedman and Young for Physical Chemistry
Organic Chemistry by Morrison and Boyd for Organic Chemistry
Organic Chemistry by Solomons and Fryhle for Organic Chemistry
Concise Inorganic Chemistry by J. D. Lee for Inorganic Chemistry
Modern Approach to Chemical Calculations by RC Mukherjee