Engineering

It will be around Rs 136000 for the first year and after than it will be around Rs 116000 per year. I hope this helps!

I suggest you to check out this
https://www.shiksha.com/upsee-college-predictor

I would suggest you to directly consult the colleges for admissions through on-campus procedures (management quota is different) as getting a college through online counselling is not possible. Also, try for admissions into private universities who have their entrances too.
Best of luck.

Kindly refer to my answer below-
https://ask.shiksha.com/can-i-appear-for-3rd-times-in-jee-mains-qna-4805141

CS is one of the main targets of many students. So you might not get CS on the 4th day. But you might get EC, which is also a good branch if you do well.
All the best.

You'll not get any IIIT. But you'll easily get an NIT of lower ranking with mining and similar non - technical branches.
Best of luck.

Hello,
Hope you are doing well. No, you are not eligible for any IIIT because you don't have good marks for IIITs. Also, you are not eligible for NITs. Try for government colleges, you will definitely get one.
All the best.

Hello,
Hope you are doing well. Yes, definitely, you are eligible for any NIT for B.Arch. You should try for your state NIT if you want, otherwise go for other state NIT. Google the cut-off ranks for getting a seat in NIT or also you can try for IIITs for B.Arch.
All the best.

Yes, you'll easily get NIT Silchar with your desired branch (probably CSE).
Best of luck.

3 years is the duration.