Engineering Scope

Taking a year drop to score more in JEE Mains is quite risky. If you have a good JEE score, you just take part in the counselling because tomorrow cannot be predicted prior, anything may happen (don't misunderstand). Please understand what I mean.
All the best.

Hello Ahreekant,
Please refer to this link to get more insights of the colleges and branches.
https://www.shiksha.com/b-tech/resources/keam-college-predictor.
However, as per your rank, your chances are very slim for any govt. colleges.

You can use JEE Mains college predictor for more insights about the shortlisted colleges based on your rank.
Check if there is any college for biotechnology.
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

If you want to good job then improve your communication skills first and as per your profile, operations or production management is the best suitable for you.

I would suggest you to install "TNEA 2017" app. Surely, it will fulfil your needs.
Wish you all the best.

Hello,
As per this rank, your friend's are chances are slim for getting any NITs or IIITs, however, check here to know more.
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

http://manavrachna.edu.in/university/
It is the best college in Delhi/NCR for mechanical engineering.

There are a number of opportunities in the following fields:
* Private Job : You can work in any of the Hospital or any clinic under a doctor and earn good.
* Govt. Job : The govt also requires biochemical graduates to work for them in the govt owned hospitals.
* Self Employment
* Teaching
The salary and emoluments depend upon how good you are in your work.