AIIMS exam is one of the competitive level exam.

You need to be dedicated and self motivated to crack your exam.

In order to score good marks in your AIIMS exam make sure your concepts are clear. You can take help of NCERT books to clear your basics and to build your fundamentals strong. 

After completing your NCERT book you can refer below recommended books as well 

Biology

Trueman’s Biology Vol. 1 & 2

Objective Biology by Dinesh

Pradeep Publication’s Biology

Prakash Objective Biology

A C Dutta for Botany ( Oxford Publication)

GR Bathla Publications’ for Biology (Theory & Objective)

Physics

H C Verma for Physics

Aggarwals’ Concept of Competition Physics for CBSE PMT

NCERT Physics: CBSE PMT by Anil Aggarwal (Set of 3 Volumes)

Objective Physics for Medical Entrances Examination (Volume 1 and Volume 2)

Chemistry

Modern ABC of Chemistry for Class 11th & 12th (Vol. 1 & 2)

Physical Chemistry by O P Tandon

Arihant Organic Chemistry

Dinesh Chemistry

Concise Inorganic Chemistry by J.D. Lee for Inorganic Chemistry

Objective NCERT at your fingertips Chemistry by MTG

For GK section make sure you are aware of the latest happening. To be updated you can read newspapers daily. 

It is recommended that you should refer previous year papers as well to understand the exam pattern and to know the level of the exam and solve mock test series for your practice.

All the Best!!