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Relative humidity is the ratio of the
- a)partial pressure of the vapour to the vapour pressure of the liquid at room temperature.
- b)partial pressure of the vapour to the vapour pressure of the liquid at gas temperature.
- c)actual humidity to saturation humidity.
- d)none of these
Correct answer is option 'B'. Can you explain this answer?
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Relative humidity is the ratio of thea)partial pressure of the vapour ...
The relative humidity (RH) is the ratio of the actual water vapour pressure to the saturation water vapour pressure at the prevailing temperature.
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For example – if a cubic metre can hold 100ml of water at 20 degrees centigrade (273 K) and it does contain 100ml then it is said to be 100% RH.
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Relative humidity is the ratio of thea)partial pressure of the vapour ...
Relative Humidity and its Calculation
Definition of Relative Humidity:
Relative humidity (RH) is defined as the ratio of the partial pressure of water vapour in the air to the saturation vapour pressure of water at the same temperature.
Calculation of Relative Humidity:
The relative humidity can be calculated using the following equation:
RH = (Pv / Ps) x 100%
Where,
Pv = Partial pressure of water vapour in the air
Ps = Saturation vapour pressure of water at the same temperature
Explanation of Options:
Option A: Partial pressure of the vapour to the vapour pressure of the liquid at room temperature.
This option is incorrect because it does not mention the saturation vapour pressure, which is an important factor in calculating relative humidity.
Option B: Partial pressure of the vapour to the vapour pressure of the liquid at gas temperature.
This option is correct because it mentions the saturation vapour pressure at the same temperature, which is required to calculate relative humidity.
Option C: Actual humidity to saturation humidity.
This option is incorrect because "actual humidity" is not a well-defined term in the context of relative humidity.
Option D: None of these.
This option is incorrect because option B is the correct answer.
Conclusion:
Relative humidity is an important parameter in many applications, such as weather forecasting, indoor air quality, and industrial processes. It is defined as the ratio of the partial pressure of water vapour in the air to the saturation vapour pressure of water at the same temperature. Option B is the correct answer because it mentions the saturation vapour pressure at the same temperature, which is required to calculate relative humidity.
Definition of Relative Humidity:
Relative humidity (RH) is defined as the ratio of the partial pressure of water vapour in the air to the saturation vapour pressure of water at the same temperature.
Calculation of Relative Humidity:
The relative humidity can be calculated using the following equation:
RH = (Pv / Ps) x 100%
Where,
Pv = Partial pressure of water vapour in the air
Ps = Saturation vapour pressure of water at the same temperature
Explanation of Options:
Option A: Partial pressure of the vapour to the vapour pressure of the liquid at room temperature.
This option is incorrect because it does not mention the saturation vapour pressure, which is an important factor in calculating relative humidity.
Option B: Partial pressure of the vapour to the vapour pressure of the liquid at gas temperature.
This option is correct because it mentions the saturation vapour pressure at the same temperature, which is required to calculate relative humidity.
Option C: Actual humidity to saturation humidity.
This option is incorrect because "actual humidity" is not a well-defined term in the context of relative humidity.
Option D: None of these.
This option is incorrect because option B is the correct answer.
Conclusion:
Relative humidity is an important parameter in many applications, such as weather forecasting, indoor air quality, and industrial processes. It is defined as the ratio of the partial pressure of water vapour in the air to the saturation vapour pressure of water at the same temperature. Option B is the correct answer because it mentions the saturation vapour pressure at the same temperature, which is required to calculate relative humidity.
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Relative humidity is the ratio of thea)partial pressure of the vapour to the vapour pressure of the liquid at room temperature.b)partial pressure of the vapour to the vapour pressure of the liquid at gas temperature.c)actual humidity to saturation humidity.d)none of theseCorrect answer is option 'B'. Can you explain this answer?
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