I would hesitate to give you a list of questions. We have established protocols.
As an immigration control officer, I was concerned with the validity of the document and the legitimacy of the person's routing to Canada. Those were usually the two markers of someone who was trying to get to Canada to make a refugee claim.
Our brethren at CSIS could give us an idea of what sorts of questions to ask if security were our primary concern. And our brethren in the medical department could give us questions to ask if medical conditions were our primary concern. It depends on what it is exactly that we're trying to uncover in that interview.