Hey Kshitiz 

See thw rank u have secured is not enough for u to grab a seat in the Vellore campus of VIT for pursuing ur higher studies in btech. U might not be able to get a seat in the Chennai campus too. U can opt for the management quota to get ur seat in these institutions as it is a private college and seats are filled until it gets fully filled.

Hope j got my point. Ask if any query.

Good kuck