B.pharm

Yes, you can open your own pathology. For this, you have to apply for the license. As soon as you get the license, you can open your lab.
Best of luck.

I am listing some top colleges on the basis of your general rank:
JSS Academy of Technical Education
JMS Group of Institutions
Rajkiya Engineering College
Purvanchal Institute of Architecture & Design
Galgotia's College of Engineering & Technology
Ideal School of Architecture
Sri Ram Group of Colleges.

Hello,
Please visit this website, you will get an idea:
http://ph2017.dtemaharashtra.gov.in/StaticPages/HomePage.aspx

Yes, you can do MBA after doing pharmacy.

You can visit the UPSEE official website from there. You can easily find out B.Pharma cut-off of previous year and all other relevant details.

There are no exams to get admission in B. Pharma colleges. You just need to clear your 12 (under graduate studies) with good marks. Beside that there are some colleges which also take entrance exams for the admission process, but if you have cleared your 12 you will easily get admission in any good colleges.

I am listing some top colleges under UPSEE:
Amity University
KIET Group of Institutions - [KIET]
Babu Banarasi Das University - [BBDU]
Sanskar Educational Group - [SEG]
Galgotias University - [GU]
Invertis University
Prasad Institute of Technology - [PIT]
SR College of Pharmacy