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Sunday, 16 August 2026
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Physics Past Questions and Answers

Topic: Pressure exerted by gas

Jamb Physics Questions - Pressure exerted by gas

Question 6:
A quantity of gas occupies a certain volume when the temperature is -73oC and the pressure is 1.5 atmospheres. If the pressure is increased to 4.5 atmospheres and the volume is halved at the same time, what will be the new temperature of the gas?
  • A 573<sup style='font-size: smaller;'>o</sup>C
  • B 327<sup style='font-size: smaller;'>o</sup>C
  • C 300<sup style='font-size: smaller;'>o</sup>C
  • D 110<sup style='font-size: smaller;'>o</sup>C
  • E 27<sup style='font-size: smaller;'>o</sup>C
View Answer & Explanation
Question 7:
In a gas experiment, the pressure of the gas is plotted against the reciprocal of the volume of the gas at a constant temperature. the unit of the slope of the resulting curve is
  • A Force
  • B Force/m
  • C Work
  • D Force/m<sup style='font-size: smaller;'>3</sup>
  • E Energy/m<sup style='font-size: smaller;'>3</sup>
View Answer & Explanation
Question 8:
The product PV where P is pressure and V is volume has the same unit as
  • A Force
  • B Power
  • C Energy
  • D Accelaration
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Question 9:
A mass of gas at 7oC and 70cm of mercury has a volume of 1200cm3. Determine its volume at 27oC and pressure of 75cm of mercury.
  • A 1200cm<sup style='font-size: smaller;'>3</sup>
  • B 1378cm<sup style='font-size: smaller;'>3</sup>
  • C 4320cm<sup style='font-size: smaller;'>3</sup>
  • D 4629cm<sup style='font-size: smaller;'>3</sup>
View Answer & Explanation
Question 10:
The pressure of a gas when cooled at constant volume will decrease because the molecules
  • A Collide less frequently with the walls of the container
  • B Have the same average kinetic energy
  • C Break up into smaller molecules
  • D Decrease in number
View Answer & Explanation