B.Com

Definitely,
There is no restriction as such. Once, you have completed your under graduation, you are eligible to pursue your Master degree in any college or university with the required level of entry. MBA can be done through online, regular or distance mode.

CA does not require a Bachelor's degree.
It's a course which is self sufficient and you can complete it after clearing all the exams and other trainings as made by the Institute of Chartered Accountants of India.
A Bachelors degree is just an add on because no one likes to be called as an undergradu

Are you doing a job? If you landed a job then you should work in a company for 3 years then you can do MBA as work experience is important for MBA.

If you want to do MBA after your Bachelors, go for BBA. It'll make it easier.

Yes, you can get it but you have to wait for the list. And if you are a resident of Delhi, then your chances are better. Last year, some seats are remained vacant, this may happen this year also and you may get it easily.

Hey, there are less chances for your admission. You can wait for the list of selected students issued by the dept.