Commerce

It is of no problem if done before registration which is commonly done by mid-term in 11th.
It is easy to switch from science to commerce or humanities, commerce to humanities but not from humanities to commerce or science or commerce to science (It doesn't mean that it's not possible).
But these arg

There is no such boundation to take maths in class 12th to pursue CA. You just need to appear for CPT for the same.

CS can be done after completing class 12th. Hence, you can start preparing for CS. You can appear for an exam in June after completing your class 12th.

Hi,
MBA or PGDM can be done by graduates from any stream. So, you are very much eligible because most of the engineers go for management courses and top the entrance exams like CAT.

Hi Anmol,
You should take science stream and in another subject, either you can take IT subject because you have scored good marks in computer science. After that, you can pursue engineering in computer science and your basic will be clear and you will have more knowledge.

Hey Anuj,
You can try your best at BIMHRD and SBS in Pune. It does not have a huge weight-age on your entrance scores, the weight-age is more on their own conducted GD and PI.
I hope that helps.
All the very best Anuj.

Company secretary is a professional course, whose grads are employed in senior management positions. Whereas, BBA graduates get supervisory jobs. Therefore, CS is a better option in comparison to BBA.

You can pursue accounting technician course and try to get above 75% marks in aggregate. This will fetch you decent job opportunities. The course duration is 2 years (Involves training of 100 hours under a CA)
All the best.

No. You cannot. You have to opt for either of the two.

Hi,
Kindly, visit their website and eligibility criteria. As your 12th combination of subjects will not be retained in your proposed study, you may have to face disadvantage of 2.5% or more from the percentage obtained in 12th and have to face the competition for ranking for selection.