The books one should refer for COMEDK exam preparation are as follows :-

Fo r Chemistry

1. IIT Chemistry by O.P Aggrawal
2. NCERT book for class 11 and 12
3. Chemistry for Karnataka CET and COMEDK P ublication - CENGAGE learning

For Physics

1. Physics for CET and COMEDK by S.Dashrathi
2. Aptitude Problems in Physics by S.S Krotov
3. NCERT book for class 11 and 12

For Maths

1. Algebra Made Easy by K.P Basu
2. Mathematics for Karnataka CET and COMEDK by BASE(2nd edition)
3. R.D Sharma for 11 and 12
4. NCERT Textbooks Class 11 and 12

Hello Aatish Kumar

Well there are plenty of books that you can refer For you COMEDK exam but some of the best book that might help you will be

1.NCERT textbook

2.H C Verma for physics

3.JEE mains and Advanced preparation books

4.R D Shrama

5.Guides from MCC

Thanks and regards