Hello, Anil I am sorry tell you tgat with this rank it will not be easy for you to get admission in a nit or iiit. Getting admission in Computer Science and Mechanical branches will be more difficult. Hence, I would suggest to you that if you are solely focused towards Computer Science and Mechanical branch then you should focus towards other private colleges and state universities as there you might have a good chance of getting admission in these branches.

Hope this helps.