Books For Organic Chemistry
(1) Reactions, Rearrangements and Reagents by Sanyal.
(2) Textbook of Organic Chemistry by P. S. Kalsi.
(3) Organic Reaction Mechanisms By V. K. Ahluwaliya.
Books For Inorganic Chemistry
(1) Concise Inorganic Chemistry By J. D. Lee.
(2) Principles of Inorganic chemistry by Puri, Sharma, Kalia.
(3) Principle of structure and reactivity by Huheey.
Books For Physical Chemistry
(1) Physical Chemistry By Atkins.
(2) Principles of Physical chemistry by Puri, Sharma, pathania.
(3) Quantum Mechanism By McMurry.
There are several books which can help you in scoring good marks in chemistry.Some of them are given below :
Gate Guide Life Science Chemistry & General Aptitude - G K Publications
GATE Chemistry (Compulsory Paper ) - Upkar Publications
You can visit the link below for previous year question papers :