Computer Science and Engineering

No Abhishek,
To pursue computer engineering, you must have had PCM and must have a good knowledge in these subjects. Commerce can be an additional subject but as a full-time commerce student, you cannot pursue any engineering branch studies.

Sorry, you can’t get admission in CSE with 71 marks. Now, the only option left to you is taking admission in a private college. So, keep trying in a private college for admissions.
All the best

With AIR 22205, CSE is tough to get there, but there are some chances of mechanical engineering. Maybe, you will get ME in the 3rd or 4th round of counselling.
Best of luck.

OBC candidates need a score of above 110 for IIT, Dhanbad and above 200 for IIT, BHU.

Hello
Information technology (IT) may adopt the monikers information systems or systems administration. Essentially, IT professionals are the users of technology.
Whereas, Computer Science(CSE) background person, I.e computer 'scientists' are focused on the theory of computational applications.

Don't go for any private college for engineering. If you have an option, join NIT.

BCA is a lower degree in comparison to B.Tech CSE. BCA grads can only get job in Small and Medium size IT companies. Generally, large IT and MNC hires B.Tech CSE grads. Any BCA grad will require minimum MCA degree qualification to get a meaningful job and career growth. Therefore, B.Tech CSE is a be

DTU is the best university for B.Tech Information Technology. You may refer to following link for list of top Engineering colleges offering B.Tech Information Technology:
https://www.shiksha.com/b-tech/ranking/top-information-technology-colleges-in-india/50-2-0-0-0