Ravi, there is not just one book altogether for NEET. This is because few authors are best in Physics, few in Chemistry and few in Biology. We have compiled a llst of books for you reference. If you are looking for NEET preparation, we have our knockout package for you and you may check that at:

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Physics Best Books:

NCERT Physics Class XI & Class XII

Concepts of Physics by H. C. Verma

Objective Physics By DC Pandey

Fundamentals of Physics by Halliday, Resnick and Walker

Fundamental Physics by Pradeep

Problems in General Physics by IE Irodov

In Physics, Concepts of Physics by HC Verma should be referred for advance problem solving and conceptual clarity. 32 years NEET Chapterwise and Topic Wise solved papers Physics by Dishal Publications will make you exam ready.

Chemistry Best Books:

NCERT Chemistry textbooks for Class XI and XII

Physical Chemistry by OP Tandon

ABC of Chemistry for Classes 11 and 12 by Modern

Concise Inorganic Chemistry by JD Lee

Dinesh Chemistry Guide

Practise books by VK Jaiswal, MS Chauhan and N Awasthi

For Physical Chemistry, Chemistry for NEET by Cengage Publications is a good choice. Oragnic Chemistry by Morrison and Boyd is a good book. For Inorganic Chemistry, GRB Concept of Inorganic Chemistry by OP Tandon is an ideal option.

Biology Best Books:

NCERT Biology Class XI and Class XII textbooks

Biology Vol 1 and Vol 2 by Trueman

Objective Biology by Dinesh

Objective Botany by Ansari

Pradeep Guide on Biology

GR Bathla publications for Biology

NCERT Biology Booster by Shri Balaji Publications and NCERT Fingertips by MTG Editorial Baord have topics that are not covered in NCERT

There are a many books you will see in market .

See, first of  all with no doubt NCERT is the most important book and specially for biology it is a must.

Of course it only provides you with theory and you need to practice questions.

So, for practicing no book is better than 30 years chapter wise questions.

This book not only give you idea of questions but also by doing this you are actually solving previous year question papers.

Other books which I would recommend are previous years question papers and a book with sample papers at least 10.

So study NCERT, practice 30 years and if you find anything new or unusual study the explanation, mark it and note it down separately.

After you have done 30 years twice for all 3 subjects, solve previous year question papers in one go mark doubts and focus on them.

Then, at last give mock tests in full exam environment.

Find out your weak topics  and work on them more.

Best Of Luck