CBSE 12th

Kindly use the college predictor app. I hope this will resolve your query.
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor
All the best.

Dear,
According to India, I would recommend these options:
Economics Hons
Travel and tourism
Advertising
Foreign language
International relations
Public policy

For getting admission into MBBS in government medical colleges, your score should be less than 500 in general category. For reserved category, it should be 400.

Hello, You may apply for few universities like Lakehead, University of Windsor for a CS related degree. Both these universities will be within your budget & IELTS requirements are 6.5 with 6.0 individually.

(BCA / B.Sc. (Computer Science) / BBA / B.Com / B.Sc. Multimedia and Animation / B.Sc. Catering and Hotel Management).
There is no entrance examination.
Candidates who have studied in regular, full time and formal education are alone eligible to apply.
Candidates whose date of birth falls on or after 1st July 1997 are eligible to apply.
Application form will be available from the first week of April 2017.
The admissions will be on the basis of the performance in the qualifying examination (10+2).
The candidates short-listed based on their merit will be called for the counselling.
Follow the link:
http://www.vit.ac.in/files/UG/index.html

It's ok. You can pursue it after your post-graduation. So, marks in class 12th is not such a big issue.

There are some short term courses that can fetch you a small package jobs.
You can go for web designing. There is a lot of demand of website designers.
You can go for PCB designing and you might get some work in small establishments as Pcb designer.

Maybe or maybe not, because last year out of 600, 577 was the cut off. After qualifying the cutoff also, there will be an interview. So, we can't assure anything depending only on marks.