Shortlisting from written test varied in accordance the branch.In Mechanical Engineering case,10/17.
Written test consisted of 2 (technical,Aptitude)papers of 30 min duration each..

Technical questions:Was all about my summer intern project..

1.Introduction
2.What would u look in a company to start ur professional career?
3.What would be ur response if u are allocated a portfolio which doesn't suit ur B.Tech ?
3.What made u do sit for this interview?

Technical: Be confident about the projects u have done(so that u can convince them about ur technical skills).
HR:Try to be confident while answering the questions.

Selection process consists of written test and personal interview.
17 Mechanical Engineering students applied and one student(myself) was selected..
My rank:one..
Firstly, my Technical skills(my projects and places where i did them) would have made clear cut distinction between me and my compitents.In addition, my confidence and clarity in answering the questions(mostly HR) would have served as a added advantage.
MY gpa(topper among compitents) might have also worked in my favour.