Which of the following has the least thermal conductivity?

a

air

b

ash

c

glass

d

water

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Explanation

Correct Option
a

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Discussions (4)

Ololadefabuyi
2 months ago

Option A is correct
Air has the least thermal conductivity because gas molecules are far apart, they collide less frequently, making it difficult for heat to transfer via conduction.
This property makes trapped air an excellent thermal insulator used in items like double-pane windows and winter clothing.

fabamz01
2 months ago

But isnt radiation transferred through air?

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