NDA 2017 Physics question

Why is it difficult to measure the coefficient of expansion of a liquid than solid ?

(A)Liquids tend to evaporate at all temperatures
(B)Liquids conduct more heat
(C)Liquids expand too much when heated
(D)Their containers also expand when heatedCorrect

Answer: (D)

Solution

A liquid has to be held in a vessel, and the vessel also expands when heated. What is observed is therefore only the apparent expansion of the liquid; the real expansion is

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Question ID VK-030765