Forum OpenACS Q&A: Re: passing list from 1 form to other
Anyway, to answer your question, because a list is just another string, all you need to do is create a HTML input field in your file1.adp and accept it in the ad_page_contract of your file2.tcl. You should url-encode it first.
So, add this just before the </form> in file1.adp:
<% ad_urlencode $descriptive_question %>
<input type=hidden name=descriptive_question value=@descriptive_question@>
Then in file2.tcl, in your ad_page_contract have something like:
Your descriptive_question list will then be available in file2.tcl.