A. Partial pressure of vapour in the mixture
B. Heat capacity of the vapour
C. Density of the vapour
D. None of these
Related Mcqs:
- Humidity chart is useful for the solution of problems concerning condensation, vaporisation and air conditioning. At a given dry bulb temperature, value of humidity obtained from the humidity chart directly, is in terms of _______________ humidity?
A. Molal
B. Relative
C. Percentage
D. None of these - Humidity chart is useful for the solution of problems concerning condensation, vaporisation and air conditioning. At a given dry bulb temperature, value of humidity obtained from the humidity chart directly, is in terms of _______________ humidity?
A. Molal
B. Relative
C. Percentage
D. None of these - At a fixed pressure, the humidity depends upon the partial pressure of vapor in the mixture. Humidity of a vapour free gas is ________________ percent.?
A. 100
B. 0
C. 50
D. Between 0 and 100 - The percentage humidity is less than the relative humidity only at __________________ percent humidity?
A. Zero
B. Hundred
C. Both zero and hundred
D. None of these - An air-water vapour mixture has a dry bulb temperature of 60°C and a dew point temperature of 40°C. The total pressure is 101.3 kPa and the vapour pressure of water at 40°C and 60°C are 7.30 kPa and 19.91 kPa respectively. The humidity of air sample expressed as kg of water vapour/kg of dry air is__________________?
A. 0.048
B. 0.079
C. 0.122
D. 0.152 - The relative humidity of air decreases in-spite of an increase in the absolute humidity, when the____________________?
A. Temperature rises
B. Pressure rises
C. Temperature falls
D. Pressure falls - When the ____________________ the relative humidity of air decreases, despite an increase in the absolute humidity?
A. Temperature rises
B. Pressure rises
C. Temperature falls
D. Pressure falls - Which of the following can be calculated theoretically using steam table and Dalton’s law of partial pressure; if the relative humidity and dry bulb temperature of moist air is known ?
A. Dew point
B. Humidity ratio
C. Wet bulb temperature
D. None of these - At the boiling point of the liquid at the prevailing pressure, the saturated absolute humidity becomes______________________?
A. 1
B. 0
C. ∞
D. None of these - With increase in absolute humidity, the dew point of an unsaturated mixture of air and water vapor (at constant pressure and temperature) ?
A. Increases
B. Remains unchanged
C. Decreases
D. Decreases linearly
