Hello student prefer NCERT to build your basic Concepts and make sure you practice all example and exercise question of NCERT before jumping to any reference book.

After completing NCERT thoroughly prefer some reference books as mentioned below -

1. Concept of Physics By HC Verma
2. Op Tondon Chemistry
3. Rd Sharma Mathematics
4. Arihant practice Book for Numerical

Feel free to comment if you've any doubt

Good luck

Hello

There are many books available in the market for 11th and 12th standard. So for physics : NCERT , Arihant's all in one . For chemistry: NCERT , Arihant's all in one , pradeeps . And for mathematics: NCERT , RD Sharma.

So first you can start from ncert book . And then practice from other reference books.

Hope this helps

Thank you