Chained Quiz means a quiz where the next question depends on the given answer to the previous question. You can run it into your WordPress site, you can chain the questions together in your style using Chained Quiz WordPress plugin. For Example: Suppose, Option-A is the right answer to a given question. So if the user selects Option-A, then you can set the next question of higher level. And if the user selects Option-B which is the wrong answer then you can set the next question of same level.
Watu is a free WordPress plugin that lets you creates quizzes and exams with unlimited number of questions and answers then assigns grade show results automatically and immediately after the quiz is over.