Hi Sourav,

With this rank in JEE Main, you certainly don't have any chance of getting admission in a government college, but a few private colleges may give you admission in B.Tech. However, if you have scored well in your 12th board examination or other entrance tests like BITSAT, COMEDK, etc., then you can always go for the options that are available on the basis of your performance in those exams. 

Feel free to ask your other queries here. We are always there to help.

Good luck!