NIT Agartala - National Institute of Technology

Candidate must have passed Bachelors degree with Chemistry as one of the subjects and secured minimum of 60% marks for GEN/GEN-EWS/OBC or 6.5 CGPA.
Refer link: https://www.shiksha.com/college/national-institute-of-technology-agartala-35298/course-m-sc-in-chemistry-166108

As per my knowledge, both the process are there.

Hello Vishnu Kanth S, admissions to all the undergraduate courses in all the NITs are based on JEE Mains exam. I am attaching a link that will give you all the required information about different aspects of eligibility. https://www.shiksha.com/engineering/articles/jee-main-eligibility-blogId-19629
Best wishes to you.

Go for BHU rather than NIT Agartala.

Top 5 NITs are Trichy, Suratkal, Warangal, Calicut and Rourkela.

Hello Sobita Sarkar,
You have received much more than minimum percentile in JEE Main. Hence I feel that you should get admission in engineering in your desired branch and the college. To help you I am attaching a link that will predict the branch and the college that you can get based on your performance in this exam. https://www.shiksha.com/engineering/jee-main-college-predictor
Best wishes to you.