Career

All specialization are equally good and offer equal career prospects as Economist or Statistics in different banks/apex bank and financial firms. Anyone can have jobs like:(a)Specialized officers in different banks/apex bank
(b) IRS (UPSC)
(c) SSC (the) different financial companies or firms.
Accordingly, you can opt either of any courses as
(a) MA in Economics.
(b) M.Com in Economics/Statistics.

Try calculating your All India Rank with the help of Shiksha Rank Predictor by entering the JEE Mains score and class 12th marks in the link given below-
https://www.shiksha.com/b-tech/resources/jee-main-rank-predictor
If your rank is below 13k, you will surely get admission in DAIICT.

Yes, you can. First you need to find out, whether companies are considering MBA in biotech in India. Decide wisely, and then decide.