Q. Which of the following statements about thermal conductivity is true? (2021)
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A.
It is higher in gases than in solids
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B.
It is a measure of a material's ability to conduct heat
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C.
It increases with temperature
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D.
It is independent of material type
Solution
Thermal conductivity is a measure of a material's ability to conduct heat; it varies with material type.
Correct Answer: B — It is a measure of a material's ability to conduct heat
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Q. Which of the following statements is true regarding thermal conductivity? (2023)
-
A.
It is higher in gases than in solids
-
B.
It is a measure of a material's ability to conduct heat
-
C.
It increases with temperature
-
D.
It is independent of material properties
Solution
Thermal conductivity is a measure of a material's ability to conduct heat; it varies with material and temperature.
Correct Answer: B — It is a measure of a material's ability to conduct heat
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