Heat and Thermodynamics| Practice MCQs Physics for Mdcat | mosaicbro.com

Heat and Thermodynamics| Practice MCQs Physics for Mdcat

7 of 106 questions (Page 1 of 16)

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1 The degree of hotness or coldness of an object is expressed in terms of:
Correct Answer: C
Explanation: Temperature is the measure of the degree of hotness or coldness of an object.
2 Which of the following properties of matter is used in the construction of a thermometer:
Correct Answer: D
Explanation: Thermometers can utilize expansion, color change, or resistance change to measure temperature.
3 Mercury is used in mercury-in-glass thermometer as a thermometric substance because:
Correct Answer: D
Explanation: Mercury's properties make it ideal for thermometers.
4 Two fixed points used for the temperature scales are:
Correct Answer: B
Explanation: The melting point of ice and boiling point of water are standard fixed points.
5 In liquid-in-glass thermometer, the thermometric property used is:
Correct Answer: A
Explanation: Liquid-in-glass thermometers rely on thermal expansion of the liquid.
6 The lower and upper fixed points on Celsius (centigrade) scale are taken to be:
Correct Answer: C
Explanation: The Celsius scale ranges from $0^\circ C$ (melting ice) to $100^\circ C$ (boiling water).
7 A Celsius (centigrade) degree is greater than a Fahrenheit degree by:
Correct Answer: B
Explanation: The relationship between Celsius and Fahrenheit scales is $F = \frac{9}{5}C + 32$.
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