Check Quiz settings, Adding/updating a quiz
under display settings, turn off shuffle questions.
Tip: in the question title, start each question with the question order number. Probably a good habit to use 001 for your first, 002 for the second. When questions display in a list for the teacher to select, the question title is the sort value.
Most of my teachers want a fixed number of questions in a question category and select all of them. We like to see the start of the question in the title. After or before a quiz, I use the title trick to call attention to questions in a category by placing a number or a ZZ at the front. For example: "1 added check The cow jumped over" or "ZZ remove 2010-3 Why did the Moodler cross" .
These are codes for actions. If somebody forgets to "remove" (ie move) the question, the ZZ puts it at the bottom of the list and it stands out. Hopefully Mr. Collman will not use it when he compiles the next quiz