Assam

Yes, you are completely eligible for it. But some universities have different rules so you will have to check from Admission office of your university.

Tengakhat College is an average college with not so good placements. I would recommend you to join some other better college, to know the exact scenario for faculty and placements get in touch with the current students through social media or in person
For university review, check out the link below:
https://www.shiksha.com/university/dibrugarh-university-31514/reviews.

Hi,
Please refer to the link below:
https://www.shiksha.com/accounting-commerce/colleges/colleges-Assam

Hi,
You can refer http://www.ihmctanghy.org.in/noticeboard.html.

Domicile and caste certificate are not mandatory from the 12th standard state. Only the criterion is that, from wherever you opt 12th will be considered for your home state quota seats.

As per the question, you completed 2-years of your education and dropped 5th and 6th semester. Details of the year in which you have dropped the course is not mentioned, I think you will need to speak with the college authorities for reliable information. In case the gap is large, you can continue the course with distance education as the fee is comparatively lower.

First of all, congratulations on getting a good percentile. To predict your rank and colleges based on your percentile, please go through this link:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor?utm_source=shiksha&utm_medium=email&utm_campaign=clientmailers

MAT are organized by AIMA four times in year mainly in December, February, May and August. Just fill the form of both MAT and Guwahati University. All the Best.