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1.3 Pressure

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Question 23
H

A gas is sealed in a container with a fixed volume.

The temperature of the gas is increased from 20 ∘C20\ {}^\circ\text{C}20 ∘C to 80 ∘C80\ {}^\circ\text{C}80 ∘C.

Which statement about the pressure of the gas at 80 ∘C80\ {}^\circ\text{C}80 ∘C is correct?

[1]
A

It is exactly four times the pressure at 20 ∘C20\ {}^\circ\text{C}20 ∘C

B

It is greater, but less than four times the pressure at 20 ∘C20\ {}^\circ\text{C}20 ∘C

C

It is lower, because the gas expands as it is heated

D

It is the same, because the volume of the gas is fixed

Markscheme

1.3 Pressure Questions

  1. GCSE
  2. /Physics
  3. /1.3 Pressure

50 exam-style questions on OCR GCSE Physics 1.3 Pressure, covering 1.3.1 Molecular motion, temperature and gas pressure, 1.3.2 Gas pressure at constant volume, 1.3.3 Compressing and expanding gases, 1.3.4 Gas volume and pressure at constant temperature, 1.3.5 Doing work on a gas, 1.3.6 The Earth's atmosphere and atmospheric pressure, 1.3.7 Atmospheric pressure and height, 1.3.8 Floating and sinking, 1.3.9 Pressure in liquids and upthrust, and 1.3.10 Pressure differences with depth. Each one has a worked solution and a mark scheme showing where the marks go.

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