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2.2.3a Melting, boiling, condensation and solidification

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Question 211

A technician is calibrating a liquid-in-glass thermometer for a Celsius (∘C^\circ\text{C}∘C) scale. Which physical states of water under standard atmospheric pressure are used to define the lower fixed point (0∘C0^\circ\text{C}0∘C) and the upper fixed point (100∘C100^\circ\text{C}100∘C)?

A

Lower fixed point: temperature of a mixture of ice and salt; Upper fixed point: temperature of steam above boiling water.

B

Lower fixed point: temperature of pure melting ice; Upper fixed point: temperature of steam above pure boiling water.

C

Lower fixed point: temperature of pure melting ice; Upper fixed point: temperature of boiling liquid inside the thermometer.

D

Lower fixed point: temperature of freezing ethanol; Upper fixed point: temperature of steam above pure boiling water.

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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