iit papers is of how many marks

There is no set pattern .It changes every years , marks too change every year.

Paper-1 :- 69 questions (23 each from Mathematics, Physics and Chemistry) for a total of 240 marks. Paper-2 :- 60 questions (20 each from Mathematics, Physics and Chemistry). Questions had differential markings, each subject had 80 marks and the maximum mark for the paper was 240.

Can't be sure bcoz pattern changes every year.but expect it to be in bwn 400-500.