The Concept of Dynamic Equilibrium NEET Questions

Physical Chemistry - Equilibrium

The Concept of Dynamic Equilibrium MCQ Questions


7.
For a liquid-vapor equilibrium in a closed container at constant temperature:
A.
Vapor pressure is zero
B.
Vapor pressure is constant and characteristic of the liquid
C.
Vapor pressure increases continuously
D.
Vapor pressure depends only on volume
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ANSWER :
B. Vapor pressure is constant and characteristic of the liquid
8.
The temperature at which solid and liquid phases of a pure substance are in equilibrium at 1 atm pressure is called:
A.
Critical temperature
B.
Boiling point
C.
Normal melting point
D.
Triple point
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ANSWER :
C. Normal melting point
9.
Henry's law deals with the equilibrium between:
A.
A gas and its solution in a liquid
B.
Two immiscible liquids
C.
A solid and its saturated solution
D.
A liquid and its vapor
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ANSWER :
A. A gas and its solution in a liquid
10.
When a soda water bottle is opened, CO2 fizzes out because:
A.
Partial pressure of CO2 in atmosphere is much lower than in the sealed bottle
B.
The solubility of CO2 increases at lower pressure
C.
Water vaporizes rapidly
D.
Temperature suddenly increases
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ANSWER :
A. Partial pressure of CO2 in atmosphere is much lower than in the sealed bottle
11.
In a saturated solution of sugar in water at constant temperature:
A.
Rate of dissolution equals rate of crystallization
B.
The solution becomes supersaturated
C.
Only crystallization occurs
D.
Dissolution stops completely
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ANSWER :
A. Rate of dissolution equals rate of crystallization
12.
Which of the following is a characteristic of solid-vapor equilibrium (e.g., I2(s) ⇌ I2(g))?
A.
Vapor pressure of solid is constant at a given temperature
B.
It exists only at very high temperatures
C.
It does not show dynamic nature
D.
It cannot exist in a closed container
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ANSWER :
A. Vapor pressure of solid is constant at a given temperature