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

What is the length of the liquid column in a barometer tube that would support an atmospheric pressure of 102000Nm^-1 if the density of the liquid is 2600 kgm^-3? [g = 10ms^-2] (JAMB 1990) 

A. 0.75 m
B. 0.76 m
C. 3.92 m
D. 39.23 m

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

A motor tyre is inflated to pressure of 2.0 x 10⁵ Nm^-2 when the temperature of air is 27°C. What will be the pressure in it at 87°C assuming that the volume of the tyre does not change? (JAMB 1994)

A. 2.6 x 10⁵ Nm^-2
B. 2.4 x 10⁵ Nm^-2
C. 2.2 x 10⁵ Nm^-2
D. 1.3 x 10⁵ Nm^-2

The atmospheric pressure due to water ¡s 1.3 x 10⁶ Nm^-2. What is the total pressure at the bottom of an ocean 10m deep? (Density of water = 1000 kgm, g = 10 ms^-2) (JAMB 1998) 

A. 1.3 x 10⁷ Nm^-2
B. 1.4 x 10⁶ Nm^-2
C. 1.4 x 10 Nm^-2
D. 1.0 x 10⁵ Nm^-2