Engineering Entrance Exam

There is no hope. Even if you scored 99%. Below 270-280 marks. Literally almost no.

You can get admission in Jamia Milia Islamia and DTU through JEE Mains score. But, for Jamia Milia Islamia ,you also have to fill application form of Jamia Milia Islamia.

You don't have chances. In 2017, round 1 cutoff was as follows:
For CSE: 202 Marks and ECE: 202 Marks.
Round 2 Cut Off:-
For CSE: 200 Marks and ECE: 195 Marks.
Round 3 CutOff:-
For CSE: 200 Marks and ECE: 194 Marks.
Similarly for EEE, so don't be disappointed. You have great chances of getting a seat in some other government colleges.
Best of luck.

Admissions are based on jee main rank. For YMCA you need to give JEE Main exam. After that, you have to fill Haryana B.Tech counselling forms available at HSTES site.
If your rank is less than 60000, you get admission easily.

Yes, you can get admissions at IIT-Gwalior. You have scored a very good marks and when you belong to ST category then you will be getting good opportunities congratulations for the marks scored and all the best for admissions. Thank you so much. If you have got the information that you wanted please like my answer and feel free to ask any query.

You can check here https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor.

Sorry to say, but it is not possible to get a good college through this score. You should try for direct admission in some good private colleges.

It is not easy to get a seat in NIT, Warangal but yes there are chances. You should choose college list wisely. I wish you will be there.
Best of luck.

Yes, you can get admission in SASTRA University with 76% in JEE and 911 marks in Intermediate. Best of luck for your future and if any query feel free to ask.