Heat Thermodynamics Test

Result

Heat Thermodynamics Test - 5

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Weekly Quiz Competition

Question 1
1 / -0

Directions: In the following question, Statement - 1 (Assertion) is followed by Statement - 2 (Reason). The question has four choices, out of which only one choice is correct.

Statement - 1:
A cylinder fitted with a movable piston contains a certain amount of a liquid in equilibrium with its vapour. The temperature of the system is kept constant. If the volume of the vapour is decreased by moving the piston inwards, the vapour pressure will remain unchanged.

Statement - 2:
Vapour, in equilibrium with its liquid, at a constant temperature does not obey Boyle's law.

A
Statement - 1 is true, Statement - 2 is true and Statement - 2 is the correct explanation for Statement - 1.

B
Statement - 1 is true, Statement - 2 is true, but Statement - 2 is not the correct explanation for Statement - 1.

C
Statement - 1 is true, but Statement - 2 is false.

D
Statement - 1 is false, but Statement - 2 is true.

Solution

The correct choice is (1). If the volume of the vapour is decreased at a constant temperature, a part of the vapour will condense into liquid such that the vapour pressure remains unchanged.