Always have questions for the HR: When the interview is at the verge of getting over the HR always asks if you have any doubts or questions to ask, don't ever say "No" thinking you are acting too clear and grabbed all the things you wanted to know. HR may think you don't have must interest in the company and not a smart person. They expect a lot of inquisitiveness, as it shows how enthusiastic you are. Throw back at least two to three sensible questions which would change the whole impression even if you were a flop from the start of the interview. Research about the company before you attend the interview as it can be very helpful in asking questions.