B.Tech

Echelon University is not good for B.Tech in CS for details check the reviews below:
https://www.shiksha.com/college/echelon-institute-of-technology-Faridabad-32493/reviews?course=128821&sort_by=year of graduation&type=question (Copy paste the entire link on the browser).

Regarding difficulty level of SRMJEE it is much easier than JEE Mains. You need to focus on all the basics concept and you will find this exam very easy.

There are some private colleges who are providing Biotechnology like Amity Noida, IMS Ghaziabad, etc. You can directly contact them for there admission. And if you want to be in government college like MNIT Allahabad. You should have to be appear in any of these exams. JEE, AKTU, etc.

You can get this directly only when you are from diploma and applying for lateral entry. This may get you through and into the be mechanical.

Hello,
Yes, definitely you should go for 2nd round and fill the same college priority list as you filled in 1st round.

I passed from Indo Global campus recently. It is much better option for engineering. Indo Global Campus provided us very good placement opportunities, industry exposure, working on live projects exposure, excellent learning environment, etc. It will be a very good option to join this reputed group for CSE.

Dear,
B.Tech CSE/IT is a better choice as Indian Industry (IT) prefer them more than BCA/MCA. They are offered better package and bulk of them are recruited through campusing every year.

It's totally your choice, both the colleges are good. You must put various things in mind like location, fee, etc. to make the final decision.

Yes, you can get into any of the branches at this rank.