Equilibrium Involving Physical Processes (Solid-Liquid, Liquid - Gas and Solid-Gas Equilibria, Henry's Law...) NEET Questions

Physical Chemistry - Equilibrium

Equilibrium Involving Physical Processes (Solid-Liquid, Liquid - Gas and Solid-Gas Equilibria, Henry's Law...) MCQ Questions


13.
The vapor pressure of water at 100°C is approximately:
A.
1.013 bar (1 atm)
B.
10 bar
C.
0.5 bar
D.
2.0 bar
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ANSWER :
A. 1.013 bar (1 atm)
14.
When water is heated in a closed vessel, the vapor pressure:
A.
Remains constant
B.
First increases then decreases
C.
Increases with rise in temperature
D.
Decreases with rise in temperature
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ANSWER :
C. Increases with rise in temperature
15.
The time taken for complete evaporation of a liquid in an open dish depends on all EXCEPT:
A.
Nature of the liquid
B.
Temperature
C.
Amount of the liquid
D.
Atomic number of constituent atoms
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ANSWER :
D. Atomic number of constituent atoms
16.
In a closed vessel containing water at constant temperature, if the volume of vessel is increased:
A.
All water freezes
B.
More water evaporates until original vapor pressure is restored
C.
Temperature drops sharply
D.
Vapor pressure decreases permanently
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ANSWER :
B. More water evaporates until original vapor pressure is restored
17.
Boiling point of a liquid:
A.
Increases with increase in atmospheric pressure
B.
Decreases with increase in atmospheric pressure
C.
Is independent of atmospheric pressure
D.
Equals freezing point
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ANSWER :
A. Increases with increase in atmospheric pressure
18.
When solid iodine is placed in a closed container, the violet color of vapor:
A.
Continuously increases without limit
B.
Decreases over time
C.
Disappears completely
D.
First increases, then becomes constant when equilibrium is established
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ANSWER :
D. First increases, then becomes constant when equilibrium is established