Hello Riyan

Congratulations on your position in your intermediate!. 

The university you are asking for- University of Hyderabad only have Intergrated courses, which are of 5 years. There is no simple graduation program (3yr).

You will have to give a written exam for the admission into these integrated programs. The applications starts around mind-April. You can keep checking the official website of the University for the same. 

http://acad.uohyd.ac.in/notifications.html 

Here is the link of the official website.

All the best!