Just wanted to share my experience in case its helpful to any other students searching the net in the hope of finding a free hosting service for their postgrad survey.
I tried many sites looking for a basic free account only to find the limits imposed meant they were not suited to what I needed and in order to continue I'd have to upgrade, often at a cost that would be out of the reach of a typical student.
Eventually I came across SogoSurvey
Setting up the account was simple enough and the basic package allows up to 50 questions combined with a range of additional helpful features. In addition to this they offer a free upgrade to students. Useful if your survey extends behond 50 questions or you're looking to make use of branching or answer piping.
Hope this is helpful, Had I have found them sooner it would have saved me hours of searching
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