When the air temperature is below freezing, the saturation vapour pressure over water is __________?

Environmental Science
Aroma Ann0

A. Equal to zero
B. Less than the saturation vapour pressure over ice
C. Greater than the saturation vapour pressure over ice
D. Equal to the saturation vapour pressure over ice

Saturation vapour pressure increases with rising temperature. Saturation vapour pressure just above liquid water is greater than that over ice. At temperatures below freezing it takes more vapour molecules to saturate air directly above water than it does to saturate air directly above ice.

Related Mcqs:

  1. Water vapour is __________?
  2. The relative saturation of an unsaturated mixture of vapour and gas
  3. The percentage of water vapour present in the air compared to that required for saturation is the __________?
  4. As the air temperature increases, with no addition of water vapour to the air, the relative humidity will __________?
  5. The relative volatility of aomponent A relative to component B is equal to the ratio of vapour pressure of component A to vapour pressure of component B at the existing temperature if
  6. Vapour pressure thermometers work on the principle of
  7. If the air temperature increased, with no addition or removal of water vapor, the actual vapor pressure would___________?
  8. The pressure within a soap bubble is
  9. The temperature scale that sets freezing of pure water at 32o __________?
  10. The heat energy released when water vapour changes to a liquid is called __________.

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