Hi All,
Please find the link to an online application wherein you can create as many quizzes with Multiple Choice and True/False questions and have them later exported to the Moodle XML format.
http://www.eduslide.net/
Click on the "Moodle XML" tab to get started. You may be required to register free to get started.
I will add more options in the days ahead.
Best,
Mohan Thomas