These are three questions that you should avoid asking at an interview.
Even if interviewer tries to solicit an answer from you regarding your required salary before making a job offer be cautious and be canny.
The best time to discuss salary question is once you have been made an offer.
The following questions will kill your chances of getting job:
QUESTION ONE What is my salary? Do not ask about salary unless you have a job offer or until interviewer has raised subject first and even then adopt a coy approach. This may not happen until second interview or even later when a job offer has been extended. If interviewer pushes for an answer, use your prior research on market rates to give a salary range.
QUESTION TWO How many days holiday/sick leave do I get? Some interviewers may perceive this as a sign of being more concern about yourself than company. Naturally, you want to get this information, but leave it like salary question, until you have an offer on table.
QUESTION THREE When will I be promoted? This question is impossible to answer. Promotion depends on timing and your performance. Opportunities for promotion depend on change, such as growth and turnover. Questions regarding promotion should be concerned with opportunities for advancement, rather than on a commitment that cannot be given.