Career

Hi,
It is a good option to opt the B.Sc bio-technology. You can explore yourself in various public sector areas. Going for higher studies is also a nice idea.
You can also go for the following profile.
1. Scientific assistant
2. Biostatistician
3. Clinical Research Manager
If you want to grow yourself in research then firstly go for Masters and appear yourself in CSIR net exam. This exam is specially designed for a researcher who wants to see them as a scientist. Don't know what this exam is about, read here - https://www.eduncle.com/csir-net-exam
Best Wishes.

Yes, definitely and why not. The only factor is clearing the cut-off and it has been clearly stated in the prospectus/ bulletin of information that gap years would be no bar for seeking admission in DU.

Based on your criteria of good salaries and Quality of life, B.Tech in ECE or Aeronautical Engineering can be very good options which you can evaluate.

You may refer to following link for details of all engineering entrance examination in India to seek admission in engineering colleges: https://www.shiksha.com/engineering/exam

BBA student can do actuarial science courses to have career in insurance industries.