Scotland

Most of the scholarships cover the only tuition fee. You have to bear living expenses. For more details of scholarship go to http://www.scholars4dev.com/5642/scholarships-in-uk-for-international-students/.

Hi Sanya, Typically, IELTS must be cleared. Most importantly you must be highly academical to be considered. You may check the university website for programme specific requirement. See here
http://www.gla.ac.uk/undergraduate/degrees/astronomy/#tab=1

Options are available in many countries like US, UK, Netherlands, Canada and Australia. You can decide about which country to go to by thinking about factors like budget, job opportunities and courses available. If finance is not a problem then you can start shortlisting the universities where you would like to apply.

Yes. MBA in UK has its own advantages. As you have mentioned as choices, we did not know you are comparing it with what?

Kindly refer to the links mentioned below:
http://www.ed.ac.uk/studying/postgraduate/degrees?id=107&r=site/view
http://www.ed.ac.uk/studying/international/postgraduate-entry/asia/india
Details can be found on the university website.

Yes, international students or Tier 4 students can work for 20 hours per week. Exact working hours and limitations are mentioned on the passport. You cannot do a full time job whatsoever.

Hello, you will find entry level jobs. Apart from class 12th what other qualifications do you have?
It is a better idea if you obtain your Bachelors degree in India or abroad, if you are interested to work in Scotland look for a course there. Check job portals, check the leading job portals in Scotland and find out the requirements and job profiles.

Dear Divesh, University of Edinburgh is one of the top universities in the world and one of the best in UK so there is question about the worth. You need to analyze your profile too when comparing universities and most importantly what do you want to study.
Best Wishes