Engineering

It will be more wise to do MBA in suitable stream after B.Tech rather than switching to BBA. If interested, he can MBA from MICA after graduation. There are many suitable MBA specializations for B.Tech like operation, marketing, agribusiness etc.

Stay in the range of 6k to 8k air rank and you have good chances if from other state, home state even 12k to 14k can sometimes get in

Based on the JEE Main OBC rank you obtained, You can get the following options.
1. IIIT Allahabad (IT)
2. NIT Trichy (Mechanical)
3. NIT Surathkal (EEE)
4. NIT Calicut (ECE)
5. NIT Warangal (EEE)
6. SVNIT Surat (CSE)
7. MANIT Bhopal (CSE). .

As per the Business rules of JOSSA (Applicable only for candidates seeking admission to NITs/IIITs, IIEST Shibpur and other GFTIs), The Candidates must PASS class XII exam with the following subjects:
For B.E. /B.Tech. Programmes (I) Physics (ii) Mathematics (iii) Any one of Chemistry, biology, biotechnology, technical vocation subject. (iv) A language (v) Any subject other than the above four
So from above you are not eligible for JOSSA JEE Main counselling. (Please SEE Annexure-2b) by using this link. https://josaa.nic.in/webinfo/File/GetFile?FileId=6&LangId=P.

The following Engineering Colleges in Karnataka are offering the B.E/ B.Tech CSE course.
1. National Institute of Technology Karnataka Surathkal
2. Manipal Institute of Technology, Manipal
3. BMS College of Engineering, Bangalore
4. RV College of Engineering, Bangalore
5. Ramaiah Institute of Technology, Bangalore
6. Dayananda Sagar College of Engineering, Bangalore
7. Jain University, Bangalore
8. JSS Science and Technology University, Mysuru
9. The National Institute of Engineering, Mysore
10. Christ University, Bangalore
11. KLS Gogte Institute of Technology, Belagavi.

Please write about the CRL rank for better response. However please tryout the state engineering colleges as under.
1. Jabalpur Engineering College, Jabalpur
2. Devi Ahilya Vishwavidyalaya, Indore
3. Ujjain Engineering College
4. Rewa Engineering College.

Keeping the last year of trend in consideration, your chances for IGDTU for CSE, ECE, IT and Mechanical are high if belongs to Delhi under the asked category.
However if not belongs to Delhi, than you can get the following options.
1. Mechanical and Automation Engineering