Hiring process is a little shady with Dell Chandigarh (Mohali) site. Your best chance to scoring a job is get in touch with a well known placement agency in Sector 34 Chandigarh and they can give you 100% details of interview in advance.
Moreover in my 5 years with Dell, I've seen that people coming from their agency have been able to score job no matter if they deserved it or not.