Groupprops:Survey questions list
All these survey questions are collected independently, so user answers to one question are not linked to user answers to other questions. You can submit answers to whichever of these you want.
The surveys are intended to be anonymous. However, in the long form answers, you can leave your name or email ID or other contact information if you are open to being contacted to continue discussion based on your feedback.
You can also take the following off-site multiple question surveys (all links will open in new tabs/windows):
User feedback about the website
What puts you off this site?
What are you looking for?
Did you find what you're looking for?
What are your suggestions for the future?
Surveys about user profile
Math references name recognition