what are the job oppourtunities after completing Ms course and PhD..?

everything has got its merits and demerits. don't know which subject you are talking about. but in general, after completing M.Sc and Ph.D, you can apply for lecturer's post in colleges. yoo would better try for private vacancies in private colleges coz goverment college's vacancies are not announced every year. when you hear about that vacany you can apply in that also.

B.tech is job oriented. when you complete this course from a reputable institute, you'll be given placements in companies if your performance is good. but as you see the economy's status is fluctuating, you never know when will the company throw you out of it. so you better search for a more stable kind of job after Phd.