Hi Shanu,

For Physical Chemistry - For basic concepts you must read NCERT and solve all the questions given in it. Then move to Modern Approach to Chemical Calculations by RC Mukherjee. Do all the solved examples. For further practice you can consider Problems in Physical Chemistry by N Avasthi. It contains three levels of questions. Level 1 contains questions pertaining to JEE Main. Level 2 contains Single Correct questions for JEE Advanced, Level 3 contains questions of various other patterns to acquaint you with the possible patterns that you may encounter in the exam.

All the best.