Physics Practice Test – Kinetic Theory of Matter and the Gas Laws (Questions with Answers and Explanations)

A quantity of gas occupies a certain volume when the temperature is -73°C and the pressure is 1.5 atmospheres. If the pressure is increase to 4.5 atmospheres and the volume is halved at the same time, what will be the new temperature of the gas? (JAMB 1985)

A. 573°C
B. 327°C
C. 300°C
D. 27°C

A fixed quantity of gas is subjected to various pressures P and the corresponding volume measured at a constant temperature. Which of the following graphs best represent the result? (JAMB 1987)


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

In the J-tube, Y and X are on the same horizontal level and 30cm3 of air is trapped above Y when the atmospheric pressure is 75cm Hg. Calculate the volume of air trapped above Y when 15cm Hg is now poured into the limb above X. (JAMB 1999) 

A. 15 cm³
B. 25 cm³
C. 35 cm³
D. 45 cm³

An air column 10 cm in length is trapped into the sealed end of a capillary tube by a 15 cm column of mercury with the tube held vertically as shown ¡n the Fig. above. On inverting the tube, the air column becomes 15 cm long. The atmospheric pressure during the experiment is ______ (JAMB 1979)

A. 90 cm
B. 76 cm
C. 75 cm
D. 60 cm

The instrument used to measure the pressure of a gas enclosed in a vessel is known as _______

A. barometer
B. manometer
C. speedometer
D. nanometer