An example of a grad-school level question?
Which of the following forms of energy is released or absorbed in most chemical reactions?

An example of a grad-school level question?
Which metric unit is used to describe an object's length?

An example of a grad-school level question?
Rhea is a moon of Saturn. Which of these facts about Rhea best indicates that it does not have a water cycle in which water changes state?

An example of a grad-school level question?
Which object in our solar system reflects light and is a satellite that orbits around one planet?