Hi Rishika

NEET question paper will be based on NCERT 10+2 level syllabus from Physics, Chemistry and Biology. In the link of the article given below are mentioned all the chapters which are included in the syllabus of each of the subject of NEET.

As for the exam pattern, NEET entrance exam will consist of a total of 180 questions form three sections viz. Physics, Chemistry and Biology. 45 questions each will be asked from Physics and Chemistry, and 90 questions will be asked from Biology. There will be negative marking in the exam. For each correct answer, you will be awarded with +4 marks, and for every incorrect answer, one mark will be deducted. For more details about question paper pattern of NEET, you can access the link given below.

NEET Syllabus

NEET Exam Pattern

Hope it will help! 
All the best!