Which one is best after B.sc in Microbiology among this M.sc environmetal science OR Master in Industrial Hygiene?

Both options are great. The choice should be based on your interest. As an Environment scientist the opportunities are varied. You have multiple options for specialization e.g ecology, solar energy , environmental chemistry, geomorphology and research, environmental law and policy, resource econom

why dnt u do masters in micro itself?

Candidates with following qualifications are eligible for GATE: Bachelors degree in engineering / architecture / technology. Masters degree in any branch of Science/ Mathematics/ Statistics/ Computer Applications or equivalent Qualifications equivalent to B.E./B.Tech. by professional societ

i feel msc in environmental science is good !!!!!!!!!! go ahead with that!!!!1111