1. Quiz
Multiple choice, true-false, gap fill, and/or short answer questions
Grammar, vocabulary and content quizzes
Often used for revision purposes (e.g. at the end of a unit)
Useful for students to assess progress
Instant feedback and automatic calculation of results
Quizzes can be set to include a feedback stage (i.e. allow users to change their answers)
In Moodle: possible to link results from a number of quizzes, to conflate them, and to link results to student records

2. Free quizzes Half Baked software: http://web.uvic.ca/hrd/halfbaked/
Hot Potatoes
Free quizzes
Moodle Quiz
Integrated in Moodle Open Source software