Making a career as a scientist need expertise in Mathematics, Physics and Chemistry. After B.Tech in Applied Sciences, it is possible to become a scientist, as a 4-year degree can be sufficient for a scientist’s job. A scientist’s role is to perform research in a specialised domain, it is necessary to have enhanced knowledge of the subject so a Master’s or a Doctoral degree would improve prospects to become a scientist.

The opportunities exist in NASA, ISRO and other Research Labs for well performed students.

Good Luck!

Hello yash, 

For becoming scientist you'll usually need at least a 2:1 degree in a relevant science subject. Most research also have postgraduate qualification like an MSc, an MSCi or MBiol.