Accounting

Institute of Chartered Accountant also provides ATC.
For details, you can visit:
www.icai.org

Hello,
St. Xavier's-Mumbai offers 24 courses in 8 streams and for full details, you can visit the given link:
https://www.shiksha.com/college/st-xavier-s-college-mahapalika-marg-Mumbai-1184
Thanks.

Candidates who have completed graduation in computer related subjects can seek admission for MCA through lateral entry. Apart from this, candidates who have completed Diploma courses in computer applications along with work experience can also apply for this course. Minimum age limit for the course is 21 years. Admission process is purely based on the scores obtained in qualifying exams. Such candidates will be given admission directly to second year of the course. Regards.

Go for CS directly. Doing any auxillary course without UG is meaningless.

CS is doubtful but for IT, you may check out last year's cut-off and get an idea.
You may have to wait till the institution rounds.
Also, it depends on the overall result.
Keep checking the college website regularly once the results are out.
The institution rounds go on till the last day of admission.

If you are poor in study, then I am afraid you will not able to do any demanding course. Also, ICWA is not a valid course as far as I can tell. If you are asking about CA course then understand that it requires very hard work.

Yes there is a university level entrance exam there for admission into B.Com accounting and finance. Rest you can call their admissions cell to confirm about the same.

Except CSE, you can get all the branches in the above-mentioned colleges. You can get CSE in the 4th or 5th round.

I would rather suggest you to go for IIT first and do not lose your 1 year in B.Tech. If you don't have the option right now then you should study and prepare for the entrance exam of IIT then if pass then further procedure will start.