CBSE 10th

Hi, Bio and maths (physics, chemistry, bio, botany, zoology) are some of the subjects which are the best to become a doctor.

Please explain your question clearly.

Of course, you can. I'd advise you check out the cut-offs for the college you want to join.

Hi,
You cannot apply for a visa without the admission offer from an university. If you haven't applied already, check for university specific requirements on university websites. Getting into a top university will be difficult basis your academic profile however options like James Cook, La Trobe etc will be available.

Hi,
You may, yes. Different universities have different requirements, you can check the entry requirements on college websites and apply accordingly. You must also take the IELTS or TOEFL to meet the English language requirements.

Yes, you can. But the admission for the current academic year has been completed.