It depends on

1.branch you want

2.category you belong ( OC OBC SC/ST PWD)

3. Your quota ( home state/ other states)

Approximately for gen category (OC) score needed are followings

CSE - 240–250 + rank below 1500

ECE- 230–240+ rank below 2500

Mech- 225+

EEE- 210+.

Chem civil - 190+

Mett BIO - 175+

For home state and other states cutoff are almost same.This is not a exact data. It may varies year by year… for more info cheek last year cutoff rank at http://Jeemain.nic.in