Dear Manthan,
It totally depends on your interest you want to prefer which course.
If we compare both the course in terms of jobs and placements then B.tech have better job opportunity but there are some jobs like junior programming which are available for BCA students.
Good Luck!!
Candidates can check B.Tech Cut off for Top IITs & NITs here.
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile