If you have acute skills and if you learn the technical aspects properly in B.Pharm then you will have a good scope to get a job all over india. Now if you want to do job in B.Pharm at Tamilnadu then also you have a lot of scope. As per google there are a lot of pharma companies in Tamilnadu. So you will have good opportunities in walk in interview as well as the placement opportunities in the college.

Some of the companies of pharmaceutical in TamilNadu:

Jeevan Pharma

Orchid Pharma

There are a lot of companies which you can search in google.

I hope this answer helps. All the very best for your future endeavors!