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

If the volume of a gas increases steadily as the temperature decreases at constant pressure, the gas obeys _______ (JAMB 2011)

A. Graham's law    B. Boyle's law   C. Pressure law    D. Charles' law

Which of these is correct about mercury in a capillary bore? (JAMB 2019)

A. Meniscus is convex and angle of contact is obtuse
B. Meniscus is concave and angle of contact is obtuse
C. Mercury does not wet glass and angle of contact is acute
D. adhesion between the mercury and glass molecules is greater than the cohesion between mercury molecules.

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)

A. I, II and III only    
B. II, III and IV only  
C. I, III and IV only    
D. I, II and IV only