See its very hard for a student in any field of BSc to get a job after BSc only. Its always wanted by companies that the student must have a BSc or any other higher education degrees. Also the Btech Biotechnology grads gets the priority over BSc grads. Thus if you wish to go in the BSc Biotechnology then I would say you should opt for MSc. The MSc/BTech Biotechnologist are mainly hired by the companies.

Now if you get a job after your BSc then also as per the data available online, you can expect a salary of Rs. 2-3LPA.

Now if you want to go for MSc Biotechnology then you can appear for IIT JAM exam in order to get admission in IIT's for MSc course. This will further enhance your skills and as you will get the tag of IIT then you will get more scope and very good salary ranges.

To know more about IIT jam visit the link below:

https://university.careers360.com/articles/how-prepare-jam-biotechnology

To know more about Biotechnology course and career visit the link below:

https://www.careers360.com/courses/biotechnology-course

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