[SunilNagpal]

Hello sir, I m a student of M.Sc Biochemistry last year,,,, can u please suggest which is best after that Mtech or MS or phd from iit in biochemical engineering to get good placement

If placement is your goal then MS or MTech is a better option...In IIT Delhi, M.Tech in Biochemical Engg is not offered, rather MS(Research) is offered....
PhD can also land u in a job, but that will take atleast 5 years on an average to complete...