ruler and compass microscope and voltmeter graduated cylinder and balance thermometer and Bunsen burner
I gave my students this multiple choice question: A student has a liquid that does not mix with water. To predict whether the liquid will float on water or sink beneath it, which tools should be used to examine the liquid?

Only one answer is correct among these 4 choices:
- ruler and compass
- microscope and voltmeter
- graduated cylinder and balance
- thermometer and Bunsen burner

Could you tell me which one is correct?

graduated cylinder and balance