JEE

It depends upon your category if one is of OBC then he/she will BET getting the IIIT, NIT, etc. But if one is from general category then you might get any NIT. But it depends upon the cutoff of JEE Mains 2018. Since the result is not released yet I can't say about the seat allotment procedure. It may vary this year. If the cutoff is low then chances will increase but otherwise it will be hard for general category.

With your score you can apply to MNIT, Jaipur. It is the best college for every engineering branch but you should also have good marks in 12th.

For CS and civil both have maths up to 3 semesters. But CS has more maths in the later semester as compared to civil. Don't fear from maths. Choose according to your choice. If you go for BBA there is much less maths than B.Tech.

Hello,
Your CGPA does not play any role in your ranks in JEE exams. It is only for the eligibility to get a seat. You need to cross the cut off marks based on your category and only then you can write JEE Advanced exam.

Hello Paras,
The official cut off marks vary every year. Last year it was very lower for PWD candidates but this year it may increase. They will release the cut off on the day they announce the results.

As COEP is a government college, the admission process is only through the CET marks. They don't take admission through JEE marks.

It's tough to get an NIT with just 49 marks. Well, keeping the difficulty of JEE 2018 in mind, maybe, you can make it into an NIT but branch may not be good.

Yes, you will but you are not eligible for JEE Mains.

Yes, you will but you are not eligible for JEE Mains.

Firstly, please don't worry. As your marks are not the only parameter to judge yourself. As per your marks, I think you need to re-strategise your career plans. If you are not interested in maths or did not have enough command in maths, so I suggest to move in that field in which you have both the command and interest as well.
Best of luck.