Questions to ask an Adcom / Questions to avoid asking

Dear folks,

someone I worked with connected me to a member of an admissions comittee of a b-school I would really like to attend.

I do have a chance to have a phone call with said person, but have not been in such a situtiation before.
I am very exicted about the oppurtunity, but I also dont want to ask the wrong questions.
Could you give me some guidance?

Best regards,
Arro