Hey Ankit! Since JEE Mains is a national level entrance exam in which huge number of colleges from all over the country participate there for a candidate always have a choice. You can predict your college with careers360 college predictor on the basis of your rank in JEE Mains 2019.

https://engineering.careers360.com/jee-main-college-predictor

Hope this may help you. 

Hello student

According to your rank in JEE mains you can't be able to get admission in any government engineering College. So i suggest you to opt a private college for pursuing BTech.

You should opt CSE or electronic engineering departement in a good private college.

All the best