As you don't mention your caste category

But at 40-50 marks in jee main you will not able to get a college as your score is very less

I suggest you to prepare for the next attempt so that you score more marks

Below I mentioned some college

(1)UIET KUK - University Institute of Engineering and Technology Kurukshetra University

(2)YMCA Faridabad - JC Bose University of Science and Technology

(3)NIT Kurukshetra - National Institute of Technology

(4)GJU Hisar - Guru Jambheshwar University of Science and Technology