Question

    If the temperature of a place increases suddenly, the

    relative humidity –
    A Increases Correct Answer Incorrect Answer
    B Decreases Correct Answer Incorrect Answer
    C Remains constant Correct Answer Incorrect Answer
    D Fluctuates Correct Answer Incorrect Answer

    Solution

    Relative humidity is the ratio of the partial pressure of water vapor in an air- watermixturetothesaturated vaporpressureof water at a prescribed temperature. The relative humidityofairdependsnotonlyontemperature butalsoonthepressureofthesystemofinterest. If the system at State A is isobarically heated (heatingwithnochangeinsystempressure)then the relative humidity of the system decreases because the saturated vapor pressure of water increases with increasing temperature.

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