Welcome to the Vapor Pressure MDCAT MCQs with Answers. In this post, we have shared Vapor Pressure Multiple Choice Questions and Answers for PMC MDCAT 2024. Each question in MDCAT Chemistry offers a chance to enhance your knowledge regarding Vapor Pressure MCQs in this MDCAT Online Test.
Vapor pressure is defined as the pressure exerted by:
a) A liquid on the walls of its container
b) A liquid at its boiling point
c) The vapor in equilibrium with its liquid
d) The air above the liquid
As the temperature of a liquid increases, its vapor pressure:
a) Decreases
b) Increases
c) Remains constant
d) Becomes zero
Which of the following liquids has the highest vapor pressure at room temperature?
a) Water
b) Mercury
c) Ethanol
d) Ether
At the boiling point of a liquid, its vapor pressure is:
a) Less than atmospheric pressure
b) Equal to atmospheric pressure
c) Greater than atmospheric pressure
d) Independent of atmospheric pressure
Which of the following factors does not affect the vapor pressure of a liquid?
a) Temperature
b) Volume of liquid
c) Nature of the liquid
d) Intermolecular forces
The vapor pressure of a liquid decreases with:
a) Increasing temperature
b) Decreasing temperature
c) Increasing volume
d) Decreasing volume
Which of the following statements is true about vapor pressure?
a) Vapor pressure is independent of temperature
b) Vapor pressure increases with an increase in temperature
c) Vapor pressure decreases with an increase in temperature
d) Vapor pressure is highest at the freezing point
When a liquid is in a closed container, its vapor pressure:
a) Increases continuously
b) Decreases continuously
c) Reaches equilibrium with the liquid
d) Remains zero
Which of the following has the lowest vapor pressure at room temperature?
a) Water
b) Acetone
c) Mercury
d) Ethanol
Vapor pressure is inversely proportional to:
a) Temperature
b) Atmospheric pressure
c) Intermolecular forces
d) Volume
Which of the following liquids will have the highest vapor pressure at 25°C?
a) Glycerin
b) Water
c) Ether
d) Benzene
Vapor pressure of a liquid is primarily determined by:
a) Volume of the liquid
b) Surface area
c) Temperature
d) The type of container
What happens to the vapor pressure of a liquid when its temperature is increased?
a) It decreases
b) It increases
c) It remains unchanged
d) It fluctuates
Which of the following has the highest vapor pressure at 0°C?
a) Water
b) Mercury
c) Ethanol
d) Acetone
The vapor pressure of a pure liquid depends on:
a) The amount of liquid
b) The nature of the liquid
c) The type of container
d) The air pressure above the liquid
If a liquid has strong intermolecular forces, its vapor pressure will be:
a) High
b) Low
c) Unaffected
d) Independent of temperature
Which of the following liquids has the lowest vapor pressure at room temperature?
a) Ether
b) Water
c) Glycerin
d) Acetone
Vapor pressure of a liquid increases when:
a) External pressure is increased
b) Temperature is decreased
c) Temperature is increased
d) Volume is decreased
At what point does a liquid reach its boiling point?
a) When vapor pressure equals external pressure
b) When vapor pressure exceeds external pressure
c) When vapor pressure is less than external pressure
d) When vapor pressure is zero
Which of the following will have a high vapor pressure at 25°C?
a) Mercury
b) Water
c) Ethanol
d) Sodium chloride solution
As the strength of intermolecular forces increases, the vapor pressure of a liquid:
a) Increases
b) Decreases
c) Remains unchanged
d) Doubles
What effect does adding a non-volatile solute have on the vapor pressure of a solvent?
a) Increases it
b) Decreases it
c) No effect
d) Doubles it
Which of the following liquids will evaporate the fastest at room temperature?
a) Water
b) Mercury
c) Glycerin
d) Acetone
Which of the following factors causes an increase in vapor pressure?
a) Decreasing temperature
b) Increasing temperature
c) Decreasing surface area
d) Increasing external pressure
What happens to the vapor pressure of water when a non-volatile solute like salt is added?
a) It increases
b) It decreases
c) It remains the same
d) It doubles
Which of the following has the highest vapor pressure?
a) Water
b) Benzene
c) Ethanol
d) Ether
If two liquids have the same temperature, the one with the higher vapor pressure will:
a) Evaporate slower
b) Evaporate faster
c) Have a higher boiling point
d) Have a lower boiling point
Vapor pressure is directly proportional to:
a) Temperature
b) Intermolecular forces
c) Atmospheric pressure
d) Volume
A liquid with high vapor pressure is likely to have:
a) Strong intermolecular forces
b) Weak intermolecular forces
c) High boiling point
d) Low volatility
The relationship between vapor pressure and boiling point is such that as vapor pressure increases, the boiling point:
a) Increases
b) Decreases
c) Remains constant
d) Fluctuates
If the vapor pressure of a liquid equals the external pressure, the liquid will:
a) Evaporate
b) Boil
c) Condense
d) Freeze
The vapor pressure of a solution compared to that of the pure solvent is:
a) Higher
b) Lower
c) The same
d) Double
Which of the following factors does not affect the vapor pressure of a liquid?
a) Temperature
b) Surface area
c) Intermolecular forces
d) Nature of the liquid
Which liquid would have the highest vapor pressure at a given temperature?
a) Water
b) Ethanol
c) Glycerin
d) Acetone
A liquid with low vapor pressure is likely to have:
a) Strong intermolecular forces
b) Weak intermolecular forces
c) Low boiling point
d) High volatility
If a liquid has weak intermolecular forces, it will likely have:
a) High vapor pressure
b) Low vapor pressure
c) High boiling point
d) High density
At room temperature, which of the following will have the lowest vapor pressure?
a) Ether
b) Water
c) Glycerin
d) Benzene
The vapor pressure of a liquid at a given temperature is independent of:
a) Volume of the liquid
b) Temperature
c) Intermolecular forces
d) Nature of the liquid
If the vapor pressure of a liquid is equal to the external pressure, what will occur?
a) The liquid will freeze
b) The liquid will boil
c) The liquid will evaporate
d) The liquid will condense
Which of the following statements is correct about vapor pressure?
a) It decreases with increasing temperature
b) It increases with increasing temperature
c) It remains constant at any temperature
d) It is unaffected by the nature of the liquid
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