Hii..

According to me,the cut off will be around 25-30 marks for ST Category.

Please see the previous years trends:-

Dear aspirant;

CategoryExpected Cut off

General98

OBC (NCL)63

Schedule Caste45

Schedule Tribe40

Here is the expected cut off for JEE mains 2018.

Hope this would help.

Thank you.

Hello buddy, thanks for connecting with career 360.                   

But the cutoff can't be predicted. It vary every year according to the difficulty level of exam. Nobody can exactly predict the cutoff. It may be bw 40-70 but it may be increase or decrease.      

Thanks for your future buddy!