Admission to all the BTech colleges there is a minimum eligibility required i.e,

1) Minimum percentage scored in 12th should be 60% or above

2)PCM percentage all together should be 60% or above

3)Jee mains score required or through management quota

If you want to take admission to btech btech colleges in branches like CS,IT then these minimum eligibility should be secured.But,if you are chosing branches like civil,mechanical then you may get some relaxation.for better information or information regarding a particular college do let me know in the comment section below.

Hope it helped.

Good luck.