You must go through your NCERT, but if you want reference books along with NCERT then here are some best reference books which will clear your concepts :
- MATHS:- For maths I will suggest you to go through your NCERT first along with NCERT EXEMPLER. And after that you can go for RD SHARMA’s books
- CHEMISTRY:- For chemistry, you should go for PRADEEP publication or with ABC publication.
- PHYSICS:- For Physics you should go with CONCEPTS of PHYSICS, volume 1 and volume 2 by HC VERMA.
But remember one thing, buy these books only when you have enough time to study them. Don’t buy these books if you don’t have enough time to study, in this case go with NCERT only. And yes never neglect your NCERT, whether you have reference book or not.
Hopes it will you……