Science

Hello Vishnu, countries in the world which offer these courses. But of course to get into these is a different procedure for different universities or institutions. A student needs to give different examinations to be eligible to seek admission. Also it is not only academics but all round performance of the student that is invariably checked by these institutes before giving admission. In view of this I would strongly advise you contact and agency which is dealing with sending students abroad for MS since they will invariably knowing what all things are required for making a successful attempt. Best wishes to you.

The following distance learning Universities are offering the Environmental Science related courses.
1. Dr. B. R. Ambedkar Open University, Hyderabad
Courses offers: (M.Sc. Env. Science& P. G. Diploma in Environmental Studies)
2. Madurai Kamaraj University DDE
Courses offers : PG Dip. in Environmental Molecular Diagnostics & PG Dip. in Environmental Health & Hygine
3. Tamil Nadu Agricultural University (DODL) : PGDP in Environmental Management
4. IGNOU : Post Graduate Diploma in Environmental and Occupational Health

Looks that with OBC category, you may get. However wait for the final cut off. All the best.