Physics Practice Test – Structure of Matter and Kinetic Theory (Questions with Answers and Explanations)

The different time rates of flow of fluids is due to ______ (JAMB 2015)

I. It is a rapid, constant and irregular motion of tiny particles
II. It gives evidence that tiny particles of matter called molecules exist
III. It takes place only in gases
IV. It gives evidence that molecules are in constant state of random motion.

Which of the combinations above is correct about Brownian motion? (JAMB 2012)

I. Mass    II. Density     III. Temperature     IV. Nature of substance

Which of be above affect diffusion?