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Question 31089
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Kinetic Theory and Thermodynamics: KTG Advanced MCQ

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KTG AdvancedHardQuestion 31089

Question

Partial pressure of water vapour in a mixture is related to humidity. Relative humidity is:
  1. A
    Actual vapour pressure / Saturated vapour pressure × 100%
    Correct
  2. B
    Saturated VP / Actual VP × 100%
  3. C
    Mass of water / mass of air
  4. D
    Temperature dependent constant

Correct answer

Actual vapour pressure / Saturated vapour pressure × 100%

Explanation

RH% = (P_vapour / P_sat) × 100. At saturation (100% RH), water starts condensing as dew.

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