It depends! Sorry if that isn't what you wanted to hear. Intranet sites are a communications medium which can be used for anything. The content of the questionnaire should reflect the scope and support the objective(s) of the intranet site. The purpose and scope should form the frame for the requirements of your project. If your sponsor won't agree these with you then don't accept the job. You can't get this information from the prospective users. The questions are best written by yourselves during the requirements phase as this exercise gives your team understanding and focus. I have been involved in setting up ours and there are several others within my (large) organisation. Most intra- and inter- sites I have seen lack any obvious purpose or scope, try and become all things to all people and fail as a result.
Some tips: the intranet site will be the internal "face" of the company - your task and your product are a vital one. Make sure the project is taken seriously, especially the scale of the task and the need for expert staff for the design. Hope this helps.
