M.Sc

Go through the link to know about the details: http://www.bits-pilani.ac.in/university/wilp/wilpoverview.

Different industries and jobs one can get involved with after completing M.Sc. in food science technology are as follows:
1) Food research
2) Analytical testing
3) Quality control
4) Dairies
5) Bakeries
6) Confectioneries
7) Poultry farm
8) Others (Dietitian, Nutritionist, Diet and fitness counsellor)

Yes, you most definitely can. Admission into M.Sc zoology would also depend on how you perform in your undergraduate degree, as eligibility into universities may be based on your results in your UG program.

Hello Narendra,
You have scored excellently in your engineering exam and obtained a degree with good marks. Why the sudden change of direction? My perception is that with govt's focus on doubling Agri income, it's Agri engineers that will be in demand. Is it not so? You can do PG in engineering but unfortunately not in Physics since you are not graduate in physics.

Some of the colleges offering dual degree programs in MBA and M.Sc are as follows:
1) BIT Mesra
2) NEST
3) IIT JAM
4) BIT Ranchi
5) NMIMS Mumbai
6) Anna University

Some of the better colleges through which you can pursue M.Sc. in microbiology are as follows:
1) BHU, Varanasi
2) MSU, Baroda
3) St. Xavier's College, Mumbai
4) Delhi University
5) AIIMS, Delhi
6) Fergusson College, Pune

You will have to appear for entrance exams conducted by the universities. You can check online for various entrance exams conducted by the relevant authorities. Minimum cut-off percentages may vary for different institutes.