I hope you are really  passionate in doing engineering specially computer science as I hope you love coding and have a plenty of logics.If you want to join a great college ,you need to undergo entrance exam that is only way to join a good college.

Hello Pawan! You can appear for JEE and get admission to IITs, NITs, IIITs, etc.. Vellore Institue of Technology is also good. I hope this will help you.