To calibrate a thermometer on the Celsius scale, standard reference temperatures called fixed points are defined. Which of the following is a standard fixed point used for this purpose?
The temperature of a cup of hot coffee.
The temperature of steam above pure boiling water at standard atmospheric pressure.
The temperature inside a domestic refrigerator.
The ambient temperature of a typical classroom.
528 exam-style questions on CIE IGCSE Physics 2.2 Thermal properties and temperature, covering 2.2.1 Thermal expansion of solids, liquids and gases, 2.2.2a Internal energy and temperature, 2.2.2b Specific heat capacity, 2.2.3a Melting, boiling, condensation and solidification, 2.2.3b Evaporation, and 2.2.3c Cooling by evaporation. Each one has a worked solution and a mark scheme showing where the marks go.