Computer Science

Amity can be a good choice if you are searching for a private university. I could have written much more names but I would suggest you Amity because it has a better stake in science as compared to other institutions.

No, in order to pursue BCA or B.Sc in CS you should complete your 12th with PCM as subjects, then only you will be eligible to apply for those courses.

Hello, No you won't be able to take admission at SGISTS for BSc computer science.

Hello Abirami, Post graduate courses abroad are invariably called as MS. In addition, unlike Indian conditions of qualifying exam etc. , things are quite different abroad. There are many nuances to the whole process. In view of this I would like to advise you that please approach an agency dealing with sending students to Canada for doing post graduation studies. These agencies will know how to overcome these nuances. Best wishes to you.

If your score is more then 80% aggregate in PCM then it is easy for you to take admission for B.Sc in CS.

Yes, you will get this college on the basis of merit. You have cleared the minimum criteria in class 12th for admission here.

Hello Preeti,
You may use the college predictor tool to know your chances of getting VJTI, Mumbai:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor
However, you have medium to low chances only.

It is not possible (legally and academically also) to jump the years in graduation. No matter what your previous qualifications were, you have to start your graduation from the 1 semester in 1st year.

Know your college admission chances based on your JEE Mains rank, home state, caste, gender, etc., here:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor