If you are asking about NEET UG

it has 180 questions is been given a waiter job for marks for positive answer and -1 marks for a negative answer and 0 marks for unattempted answers

so you can understand that the prime weight age is given to biology from where you can score 360 out of 720 marks followed by chemistry which is prioritised as my rules in events of a time over your marks in physics which is only valid once the biology and chemistry marks are tied in between two students you also have the same grand total out of 720

Hope this knowledge helps you

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