NIT

For sc, st it will be low. I think they get back some part of the fees afterwards

Yes u can get for sure
all_the_best

Category ?

Average chances u may get govt. Colleges.

first of all congratulations for the very good score. as far as I know, u ll get a good nit but it is difficult to say that you ll get cse or not but u ll surely get good nit.
best of luck

no its not compulsory

Hi
You may find your answer to browse this link
https://www.shiksha.com/jee-mains-college-predictor

it depends on your board marks

Last year, the counselling of JEE Main was held by JoSAA. The Joint Seat Allocation Authority (JoSAA) was a collaborating between Joint Admission Board (JAB) and Central Seat Allocation Board (CSAB). The JoSAA counselling was a combined effort to provide a single platform to the entrants of JEE Main and JEE Advanced for applying to IITs, NITs and Other GFTIs.It is expected that even this year, similar counselling mechanism will be followed.
Best of luck !!

JEE main rank predictor will tell what will be your approax rank and after that you can predict college on college predictor