B.pharm

You can opt for MBA after B.Pharm. It would be beneficial for you. You can avail better job opportunities after completing your MBA.

I am not sure about B.Tech or B.Sc biotech but don't go for B.Pharm.

Candidates having Bachelor degree in pharmacy can find job openings in central government & state government sectors. To obtain a career in these sectors, the candidates have to appear for the exams conducted by government.
B.Pharm degree holder can work in government Sectors as Pharmacist, Quality Assurance Health Manager, Analytical Chemist of Quality Control Manager, Data Manager, Regulatory Manager & Regulatory Manager.

Hey Leela, MBA can be done after any field of graduation. MBA teaches you business concepts that helps in day to day working of organisations. You can go for MBA marketing which will be helpful for you to do job in pharma related companies in marketing domain. Also you can work with market research companies working for pharma clients.
Rest depends on your area of interest.
I hope this will help you in taking decision.
For any other query feel free to contact.

SIBM, Pune and Indian institution of Pharmaceutical Management, Lucknow are two good colleges for MBA in dual Specialization.

You have many options rather than B.pharm like:
1. BHMS
2. BAMS
3. BUMS
4. BDS
5. BPT
6. Lab
7. Pharmacy
8. Forensic
9. Soil
10. Plant
11. Genetic