Engineering

Well. Of all the branches, ECE is preferable because now the trending world is looking at this branch. The employment opportunities in this branch are wide and the encouragement of ECE based recruitment is seen clearly. And there is a chance to get a job in government sector mostly central governmen

Can you please clarify the question, so that I can guide you better?

There are no classes for an entrance exam. For details about this exam kindly refer to the link below:
https://www.shiksha.com/university/Mizoram-university/exams/mzueee.

Yes, but only on Mondays and Thursdays. Although you are not supposed to wear uniform on other days, the college staff might question you for wearing round neck tees and black/red clothes.

The first step to apply for a college is to fill the admission form. you may collect the same from the institute.

Check this link:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor?utm_source=connect&utm_medium=CR_JEECP&utm_campaign=7476690.
Hope this helps.
Best of luck.

I think in 2018 it is 22.5 for OBC category.

Yes, for sure. There will be 3 books in 3 semesters with maths. So, you have to study maths to pursue B.Tech in CSE. First will be mathematics 1 then mathematics 2 and lastly mathematics 3. But if you follow the regular class and practice it then it will not be as difficult as you think. Be positive