Can I use scientific notation in quiz questions and answers?

Yes. You can add scientific notation in the question, answer or feedback sections of a quiz either via LaTeX (surround the LaTeX with double dollar signs)
e.g.

or via html tags e.g. H₂O

Can I use LaTeX in Moodle?

Yes.

If you type the LaTeX expression

e.g. “E=mc^2″

surrounded by double dollar signs (not shown above), the page will be rendered like this: