hi,
interview will be for 15 mins,
in interview they will ask about 10-20 questions,
these questions r from economics(eg: 
sensex,nifty,microeconomics...etc)
,the subjects which you have studied ,
some basics of computers....
interview will be easy....
weightage for interview will be around 30 percent..
written test 70%...
if u got good marks in written test, u will be selected...
i am also from hyderabad...this time my interview is on 
26th may...
all the best.....