Bachelors

https://www.shiksha.com/mass-communication-media/ranking/top-mass-communication-colleges-in-india/99-2-0-0-0.

Hi, yes you can apply for graduation courses through online mode on Delhi University website. For more information regarding admission process and cut off, eligibility of particular course visit website of Delhi University.

Yes, you are eligible for the course, but you have low percentage than they can take interview of yours means some questions they will ask if you have given the correct answers then they will give you admission.

Hi,
Yes, you can get into BBA, B.Com, BMS, etc. If your 12th grades are good then you can get into any of these. Best colleges to pursue are Christ Bangalore, Xavier's-Mumbai, BHU, DU, etc.

There are some exams like:
1. IELTS
2. TOEFL
and lots more.
Not much knowledge about commerce, still you can give these exams to qualify to go and study abroad. Some countries need their own language test.

Yes, you can take admission in Marwari College.

Hello,
Marks Classes (MC), Pune provides these courses:
BAF
Bachelor of Accounting and Finance
BMS
Bachelor of Management Studio
M.Com
Master of commerce
B.Com
Bachelor of Commerce

Hi,
If you want to do PG in Canada, you must have excellent grades in B.Tech and MS admissions honestly is very competitive in Canada. You may or may not get a chance later. If you are academically good now you should try early on, you will get exposure to various subjects and courses in UG itself, try to get into a good university. You can work after studies and also do a PG later there itself.