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Gas Laws Practice Questions

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The following physics revision questions are provided in support of the physics tutorial on Gas Laws. In addition to this tutorial, we also provide revision notes, a video tutorial, revision questions on this page (which allow you to check your understanding of the topic) and calculators which provide full, step by step calculations for each of the formula in the Gas Laws tutorials. The Gas Laws calculators are particularly useful for ensuring your step-by-step calculations are correct as well as ensuring your final result is accurate.

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Thermodynamics Learning Material
Tutorial IDTitleTutorialVideo
Tutorial		Revision
Notes		Revision
Questions
13.9Gas Laws

Physics Revision Questions for Gas Laws

1) The volume of a gas sample decreases by a factor of 4 when an extra weight is placed above the piston, as shown in the figure.

Physics Tutorials: This image provides visual information for the physics tutorial Gas Laws

What is the final pressure of gas in Pa if initially it was under standard atmospheric pressure?

  1. 25 kPa
  2. 400 kPa
  3. 400 000 kPa
  4. 25 000 kPa

Correct Answer: B

2) Five litres of gas expand isobarically to 15 L when temperature becomes 900 K. What was the initial temperature of gas?

  1. 27°C
  2. 300°C
  3. 2700 K
  4. 2427 K

Correct Answer: A

3) A gas sample is heated by 100 K under constant volume in a fixed container. As a result, pressure becomes 1.2 atm from the value of standard atmospheric pressure it initially was. What is the final temperature of gas?

  1. 500 K
  2. 120 K
  3. 100 K
  4. 600 K

Correct Answer: D

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  2. Thermodynamics Physics tutorial: Gas Laws. Read the Gas Laws physics tutorial and build your physics knowledge of Thermodynamics
  3. Thermodynamics Revision Notes: Gas Laws. Print the notes so you can revise the key points covered in the physics tutorial for Gas Laws
  4. Check your calculations for Thermodynamics questions with our excellent Thermodynamics calculators which contain full equations and calculations clearly displayed line by line. See the Thermodynamics Calculators by iCalculator™ below.
  5. Continuing learning thermodynamics - read our next physics tutorial: Entropy and the Second Law of Thermodynamics

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