Hey harshita!

The branch that you should choose in NIT rourkela are in the following order of preference:

Biotechnology( better placements)

Industrial design( no placements , but more exposure) 

Metallurgy ( better future scope)

To know more about NIT rourkela , follow the given link:

https://www.careers360.com/university/national-institute-of-technology-rourkela

Hope it helps!