Hello,

Assuming you are asking about NEET exam, NEET question paper will be of 720 marks. Total number of questions are 180 (45 questions from Physics, 45 questions from Chemistry and 90 questions from Biology section).
You can refer to the link below for NEET chapter wise weightage-

 https://medicine.careers360.com/articles/neet-chapter-wise-weightage-and-important-topics

Good Luck!

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