IIT

If you are from Rajasthan, then you should proceed towards Sikar. There are many institutes for IIT preparations, but one of the most reliable and best institute is Matrix JEE Academy, having best of faculty members in Sikar, as well as outside of Kotak. Other than Kotak, now Sikar is also becoming education hub, and got recognition in northern part of India. There are students from almost northern region as well as north eastern region also. You can also check its website and programmes running by it. It has best of the faculty members which are dedicated towards bright future of students in field of engineering.

Hi, score of 200-220 marks out of 390 marks in JEE Main Paper 2 will get you chance in NIT's.

No, you cannot.
Admission into Masters Courses in IIT solely depends on your JAM performance.
Your graduation grades don't play any such role there.

All IIT Institutes are high valued institutes imparting Bachelor's and Master's degree to candidates. Kindly click below for Top Engineering Colleges in India. https://www.shiksha.com/b-tech/ranking/top-engineering-colleges-in-india/44-2-0-0-0.

You can check here in detail:
https://www.shiksha.com/university/indraprastha-institute-of-information-technology-delhi-32722/admission.

For NIT Trichy, you have to score at least 200 marks in JEE.

Hello,
Few government colleges for pure Science are given below:-
1) IISER, Pune, Maharashtra (IISER Entrance Exam)
2) NIT
3) KTHM College, Nashik, Maharashtra
4) RYK College, Nashik, Maharashtra.

If you want to pursue CSE from a top notch IIT, you need to have at least a rank below 500 in JEE Advanced to do so. To qualify for JEE Advanced you need to qualify JEE Main first, which is conducted by NTA.

Hi,
For ISM (IIT) Dhanbad, the closing rank was 10491 and 9484 for the year 2017 and 2016 respectively. There is no information about the sectional cut-off online. You may get your doubts cleared by contacting the institute directly.