Mahindra Ecole Centrale

This is a private college. So, no need to worry about category, and also in this college, they accept applications who are qualified in JEE Mains (i.e. he/she should qualify according to OC category cut-off) as per the year, as of this year is around 74. So, if you cross this year cut-off, you may get a seat and if you are above 120, you will get CSE for sure. And, I can't guarantee because it's based on the people who apply and you need to qualify JEE Mains to apply.

This is a private college. So, no need to worry about category, and also in this college, they accept applications who are qualified in JEE Mains (i.e. he/she should qualify according to OC category cut-off) as per the year, as of this year is around 74. So, if you cross this year cut-off, you may get a seat and if you are above 120, you will get CSE for sure. And, I can't guarantee because it's based on the people who apply and you need to qualify JEE Mains to apply.

This is a private college. So, no need to worry about category, and also in this college, they accept applications who are qualified in JEE Mains (i.e. he/she should qualify according to OC category cut-off) as per the year, as of this year is around 74. So, if you cross this year cut-off, you may get a seat and if you are above 120, you will get CSE for sure. And, I can't guarantee because it's based on the people who apply and you need to qualify JEE Mains to apply.

Yes, there are full chances of getting CSE in NITs. You must have to participate in counselling of JEE. Only after counselling, we will get to know about fees concession.

No, this college's intake is only through merit basis over JEE & SAT. This college has brightest minds of India, so you need to qualify JEE Mains. Else, you need to score above 2000/2400 in SAT. As you said I think, you did not qualify for JEE Mains, then you are not eligible to get admission in this college through management quota.

His JEE Mains marks are very less but he can try.
If seats are available, he might get admission.

You might have a chance if you have any reservation criteria else give it a try. You have very great chance to get into this institute with this rank. Attend the counselling and choose your options appropriately. Try Shiksha college predictor for better analysis.

https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor
Please, go to the college predictor link I am sharing here to know about the college you can get. Good luck.

TS EAMCET 2018 College Predictor
Use your TS EAMCET 2018 rank to see where you can get admission at the link provided below:
See the courses, colleges & rounds you may crack
The result is based on admissions data of TS EAMCET 2017
Get resources & insights on colleges & courses
https://www.shiksha.com/b-tech/resources/ts-eamcet-college-predictor.