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2.2.3a Melting, boiling, condensation and solidification

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Question 70

An experimenter wants to calibrate a liquid-in-glass thermometer on the Celsius scale. They need to find two standard reference temperatures, known as the lower fixed point and the upper fixed point, under standard atmospheric pressure.

They have four mixtures available:

  • Mixture W: A mixture of pure crushed ice and pure water.
  • Mixture X: A mixture of crushed ice, water, and table salt.
  • Mixture Y: Pure water boiling at standard atmospheric pressure.
  • Mixture Z: A concentrated salt solution boiling at standard atmospheric pressure.

Which combination of mixtures should the experimenter use to determine the fixed points?

A

Mixture W for the lower fixed point and Mixture Y for the upper fixed point.

B

Mixture X for the lower fixed point and Mixture Y for the upper fixed point.

C

Mixture W for the lower fixed point and Mixture Z for the upper fixed point.

D

Mixture X for the lower fixed point and Mixture Z for the upper fixed point.

Markscheme

2.2.3a Melting, boiling, condensation and solidification Questions

  1. IGCSE
  2. /Physics
  3. /2.2.3a Melting, boiling, condensation and solidification

313 exam-style questions on CIE IGCSE Physics 2.2.3a Melting, boiling, condensation and solidification. Each one has a worked solution and a mark scheme showing where the marks go.

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