Environmental Science

Yes, in India especially, B.Sc in Environmental Science graduates have plenty of job opportunities now and as you see there is a big need to make the environment clean and only these graduates can do it, thus it has a good scope.

At present, M.Sc. Degree holders in Physics, Chemistry, Mathematics and Information Technology are high in demand. After completion of your degree in M.Sc. You can also go for the further higher studies such as research programmes or Ph.D. courses.

The admission process for the course is varied, as various institutes have their very own criteria and processes of admission. Admission to the course is often based on the candidates performance at the level of graduation, and often, on performance in a relevant online entrance test and interview conducted by the concerned university/institute.
The online test is generally an hour long and consists of multiple-choice questions assessing students based on proficiency in English, Analytical Reasoning, and Quantitative ability. Hope this helps, Wish you luck for your future endeavors!

Eligibility10+2 from a recognized university
Admission ProcessDirect admission to colleges. However, a few colleges conduct entrance tests. Course FeeINR 20,000 - 3 lacs
Average Starting Salary INR 3 - 5 lacs.

Yes, you can do as you have already done Bachelors. But, I would recommend you to go through the regular mode, instead of distance one.