Hello Subrata,
Most important for NEET/AIIMS is your NCERT books as these books include basic principles and concepts and provide accurate information.
BUT KEEP IN MIND YOU HAVE TO CLEAR ENTRANCE YOU ARE NOT DOING PhD so dont go by all books mentioned here and there
KEEP NCERT + ONE REFERNCE BOOK + MAXIMUM MCQS PRACTICE = Medical SEAT Apart from this, you can add upon it by following books
Biology -
Truemans Biology Vol. 1 & 2
Objective Biology by Dinesh
Pradeep Publications Biology
Physics -
Concept of physics by H C Verma
Fundamental of Physic by Pradeep
Objective physics by DC Pandey
Chemistry -
Arihant Organic Chemistry
Dinesh Chemistry Inorganic
Physical Chemistry by O P Tandon
Objective NCERT at your fingertips Chemistry by MTG
Hope this helps!....BEST OF LUCK
Regards
Dr. Parmanand Agarwal
MBBS, MD
Career counselor

You should start your preparation from NCERT books to work on your basics and to make your fundamental strong. 

Syllabus is based on NCERT books only. There are chances that you can get direct questions from NCERT in your NEET exam.

Make sure you solve all the exercises which are given at the end of the chapters. You can also solve NCERT exemplar.

 

Apart, from NCERT you can also recommended below books for your preparation

 

Biology
Trueman's Biology Vol 1 and 2
Objective Biology by Dinesh
Pradeep Publication's Biology
GRB Bathla's Publication's for Biology

Physics 
Concepts of Physics by H. C. Verma
D C Pandey Objective Physics
Fundamentals of Physics by Halliday, Resnick and Walker

Problems in General Physics by I. E. Irodov

Chemistry 
Physical Chemistry by O.P. Tandon
Organic Chemistry by Morrison and Boyd for Organic Chemistry
Modern’s ABC of Chemistry for class 11th and 12th
Concise Inorganic Chemistry by J. D. Lee for Inorganic Chemistry
Dinesh Chemistry

 

You should also refer to previous year papers to know the exam pattern and to know the level of the exam.

 

All the Best!!

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