If you want to start your preparation from zero level you should begin with NCERT books. It will help you to complete your syllabus and it will make your concepts clear and fundamentals strong.

After NCERT books you can also recommended below books

Physics

HC Verma – Concepts of Physics (Part I)
HC Verma – Concepts of Physics (Part II)
IIT JEE Physics – DC Pandey
Problems in General Physics – I.E. Irodov
Physics for IIT-JEE – Resnick, Halliday, Walker.
Problems in Physics – S.S. Krotov

Chemistry

Organic Chemistry – Morrison Boyd
Organic Chemistry – O.P Tandon.
Modern Approach to Chemical Calculations – R.C. Mukherjee
Numerical Chemistry – P. Bahadur
Concise Inorganic Chemistry – J.D. Lee

Mathematics

IIT Mathematics – M.L. Khanna
Differential Calculus – A Das Gupta
Class XI & XII Mathematics – R.D. Sharma.
Trigonometry, Geometry Books – S.L. Loney.
Problems in Calculus of One Variable – I.A. Maron
Higher Algebra- Hall and Knight

All the Best!!