I am in class 10th I should be doing IIT How many marks can be getting in class 10th and 12th to be doing IIT

@ raman 
10th class mark donot have any relation with doing btech in iit , just clear your concept in class 10^th and read ncert to clear your besics . 
still a cgpa of 9.2 anmd above is preferrable . 
and in 12^th u need to secure minimum 75 percent for getting elligible to give jee mains exam , 
and u need to qualify jee mains and after qualifying , u need to give jee advanced . 
and if u will qualify jee advanced , then u can enter iit . 
ALL THE BEST ..