Dear aspirant

for preparing board exam

1.  you can practice previous year exam paper questions and model paper

2.  Revise some important points from the different topics likes for organic chemistry Sn1 and Sn2 reaction working and for maths vectors ,differentiation, integration

There is some books which will help out for revision and jee tricks

For chemistry :

1. NCERT Chemistry after 12th board

2. Modern's abc of chemistry(part 1and part 2)

3. Pradeep's new course  chemistry

4. Concise inorganic chemistry

For maths:

1. NCERT solution of 12th board by Arihant

2. R.D Sharma

3. R.S Aggarwal

For physics

1. NCERT of 12th board physics

2. Concept of Physics

3. New simplified physics by SL Arora

I hope it will help you

Thank you