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Everyday Science Medium FPSC PPSC NTS Uploaded: 22 Jun 2026

Which gas law states that the volume of a gas is directly proportional to its temperature at constant pressure?

  • A Boyle's law
  • B Charles's law
  • C Gay-Lussac's law
  • D Avogadro's law
Correct Answer: Option B — Charles's law
Explanation:
Charles's law states that at constant pressure the volume of a gas is directly proportional to its absolute temperature meaning gas expands when heated and contracts when cooled.
Submitted by: PaperMCQs
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