A free tool that is capable of selecting questions from a pool and shuffle them randomly?
I would recommend to use ClassMarker, which is a great tool for creating a quiz with random questions.

You can choose questions you select and randomize the order of the selected questions, randomize answer options or add randomly selected questions, so each time the quiz is taken, different questions will be pulled from your question pool.

Also, the option of exporting the tests to word is available.