Hi megha,
There are some important questions asked Frequently by the HR during an interview (may it be from any field):

1- Did you face any difficulty in finding this place?
2- Tell me something about your self.
3-Why does this role interest you? Or why have you applied for this job?
4- Why do you think should we take you for this job?
5- Are you an Introvert or Extrovert?
6- What is your greatest strength?

If you are able to answer these questions Confidently then answering questions from the relevant field is your cup of tea.

Here are some links that might help you to answer these Questions & Prepare you for Interview:

http://careerride.com/hr-interview-questions-for-freshers.aspx

http://www.prac-career.blogspot.in/2013/06/how-to-prepare-for-your-first-job.html

http://jobsearch.about.com/od/interviewquestionsanswers/a/interviewquest.htm


All the Best.

It needs lots of practice .. follow various site where you can have some trick from there..