Hello,

On the basis of the information you stated that you have scored 90 marks in JEE Mains and you belong to SC category. Your general rank will fall around between 90000 to 95000. And your category rank will be near about 3000 to 3500.

Now not only your marks matters, but your class 12 marks also matters in deciding your rank in JEE Mains. And now talking about colleges, if you have secured a rank between 3000 to 3500 then you will get many good NITs. You can get NIT Kurukshetra, NIT Jalandhar etc. In getting a good college and a good branch, your home state also matters, if you choose a nit in your home state, with this rank you can even get a good branch too. But if opt for other sate NITs then it will be tough to get CSE branch but you will definitely end up with mechanical or civil branch.

Hope this has answered your question. If still have any doubts regarding colleges feel free to ask. And all the best for your future.