After you’ve done your research on the employers, create a list of questions to ask.  Some general ones you might consider are:

• What particular skills/qualifications does (organization’s name) look for in prospective employees/interns?
• What is your organizations hiring process?
• What has been your experience at (organization’s name)?

Show that you’ve done your research and ask questions about what you’ve learned

• I read about xyz on your website. Can you tell me more about that initiative?

Do NOT ask questions that can be easily answered by looking at the employer’s website. Also, don’t ask questions about salary and benefits. A career fair is not an appropriate place for those questions.