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

Heat and Thermodynamics| Practice MCQs Physics for Mdcat

7 of 106 questions (Page 3 of 16)

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15 What temperature on Fahrenheit scale corresponds to absolute zero?
Correct Answer: D
Explanation: Absolute zero is $-459.67^\circ F$, approximately $-460^\circ F$.
16 One Calorie is equal to:
Correct Answer: B
Explanation: 1 calorie = 4.18 joules.
17 SI unit of heat energy is:
Correct Answer: C
Explanation: The SI unit of heat energy is the joule.
18 Absolute zero is considered to be the temperature at which:
Correct Answer: D
Explanation: At absolute zero, molecular motion theoretically stops.
19 The Kelvin and Fahrenheit scales show the same reading at:
Correct Answer: C
Explanation: The Kelvin and Fahrenheit scales intersect at $574.25^\circ$.
20 Which of the following does not have the same units:
Correct Answer: D
Explanation: Power (watts) is energy per unit time, not energy itself.
21 Melting point of ice and boiling point of water in Fahrenheit scale are taken as:
Correct Answer: D
Explanation: On the Fahrenheit scale, ice melts at $32^\circ F$ and water boils at $212^\circ F$.
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