NIT

If you are eligible to get a seat in Electronics and Communications, then I would suggest you take it over Electrical and Electronics in NITK. As EC is a better branch in terms of faculty and placements, then EEE in NITK.

Hello,
Hope you are doing well. Yes, definitely you will get NITs on the basis of your rank and marks in JEE Mains. Go for counselling, and get the best NIT with your rank. All the best.

Please compare with the cut-offs of the last year for NITK.
https://www.shiksha.com/college/national-institute-of-technology-surathkal-mangalore-24187/admission#admission

I think it is very difficult. But you may try some other colleges which give admission even if you are qualified in JEE Mains. I don't know the colleges exactly which provide such admission. In addition to that, it is also advisable to go for JoSAA options entry as many seats are being vacant in the past few years.

I think it's difficult for you to get MNNIT CSE if you belong to general category. According to me, both are good, but in MNNIT, you can opt for IT and after 1st year if your CPI is good (above 8.5) then you can change your branch to CSE.

One should have scored at least 75% marks in class 12th examination. Apart from this, there is no other condition of 12th board percentage is required for admission in NITs and IIITs. And also there is no any official benefit of having a good percentage in 12th.

Hello Veman,
To get admission at NITs or IITs, you are required to have a good score in JEE Mains and Advanced. But, it is mandatory that you have a minimum of 75% (for reserved categories) or 65% ( for unreserved categories) in board exams to be eligible for the admission. Even if you have a top rank in JEE exams, if your score in boards is not as required, then you will not be able to get a seat.

Hello Ayushi,
You may use the college predictor tool from the link below to know your chances of getting a seat at NITs and the other government colleges:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

Yes, but you have to give the improvement exam for all the five subjects of your 12th class. Only then your improved score would be considered otherwise your original score (unimproved) will be considered for the admissions.
Best of luck.

Though, Advance will not affect your NIT admissions and so the JEE Mains will do. Kindly mention your JEE Mains marks and category to get the possible choices of college for you.