Nursing

Hello Sujata,
Here you are confused about two different stream and field.
For B.Sc in nursing you need to complete 12th with PCB. This course is purely related with nursing and need deep knowledge of biology.
Another course you mentioned here is purely a management course so for this you does not need any knowledge of science.

Kindly visit iihmr.org for the best courses in this area in India.

Both colleges are good for B.P.TH course. Being a student of MGM myself, I know the college well and it has a good academic record. Consider the fee structure and plan out accordingly. All the best.

Yes, you can pursue B.Pharm from a reputed college on the basis of your class 12th score.

It depends on the field of your interest. Microbiology will mainly deal with microorganisms and there interaction with the environment as well as the benefits we can garner from their engineering. Whereas, pharmacology will deal with all the medical aspects as well as chemistry of drugs.
If you are looking for job opportunities after completing this courses both will grantee a good one, provided you have a Masters degree in hand.
All the best.

Depending on your previous work experience, job profile, province in Canada, your qualifications and employer, your salary will vary. The pay may range from C$30,000 up to 85,000. This is for an entry level job.

I will suggest you to pursue career in BAMS because that will provide you a doctor degree.
Al the best.