Practice Quizzes as the name suggests are good for practice to review all the key concepts for a specific chapter or chapter section.
Access Practice Quizzes
From Practice List
You can also access Practice Quizzes related to a particular chapter section from “Learn", in the Smart Content tab at the right-hand side of the screen.
A Practice quiz related to a particular chapter section can be found in the smart content tab indicated with a Checkmark icon.
Click on the link to attempt the quiz.
If a practice quiz is already part of an assignment, a pop-up message will show up stating that this will count as an attempt and will be considered for grading.