In India After b.tech done many of the students are preferring to go with M.tech.To get Admissions in IITS they need to appear GATE entrance examination and they need get 99% marks.

Many Gov jobs and foreign universities preferring gate score.

After M.tech done students are having plenty of opportunities in research and development and the pay scale is very high comparative with others.

To qualify gate there are many coaching centers available.I will recommend the best gate coaching will be the www.rrgatecoaching.com.These institute owned by alumni of IIT delhi having good experience in teaching field.