B.Sc

Yes, that's right, but it is in India only, but in other countries there is no any discrimination in job of nurses and doctors and so. They all are treated equally.

It depends on your interest. If you want to return back to your native place after studying abroad, go for the courses which are in demand in your country and if you want to settle in abroad, go for courses which are in demand there.

MCA is a job oriented PG degree with more job opportunities in comparison to M.Sc degree. But if you are of scientific temperament then M.Sc is a better option. You may chose any based on your interests.

Jobs are available at qc/material testing laboratories. Masters will lead you to government jobs.

Kindly, mention the country and university's name.

Yes, you can apply for Combined Higher Secondary Level exam, which will be conducted in November of this year. Qualifying in it will be purely out of your homework you do.

You are eligible to seek admission in MCA in majority of Universities. After MAr you can get job of developer or tester in any IT company or IT department of any enterprise with starting CTC of Rs 3.5 Lakhs or above. You are also eligible for higher studies in CS field after MCA.

The yearly fees varies between AU$ 10000 to AU$ 16000 for UG.
Below mentioned are the best universities:
1. Murdoch University.
2. Victoria University.
3. Sydney University.

Most of the universities will not allow study in two degrees of B.Sc and BCA simultaneously. However, you may approach targeted university for clarification on subject with registrar of university.