A. Zero
B. Hundred
C. Both zero and hundred
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 - 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 - 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 - Which of the following processes is followed by unsaturated air (with dry bulb temperature 12°C and relative humidity 47%) passing through water spray washer (temperature of water being constant at 40°C ?
A. Humidification only
B. Heating only
C. Both heating and humidification
D. Evaporative cooling - 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 - Air initially at 101. 3 kPa and 40°C and with a relative humidity of 50%, is cooled at constant pressure to 30°C. The cooled air has a____________________?
A. Higher dew point
B. Higher absolute (specific) humidity
C. Higher relative humidity
D. Higher wet bulb temperature - 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 - In case of an unsaturated mixture of gas and vapor, the percentage saturation is __________________ its relative saturation?
A. Lower than
B. Higher than
C. Equal to
D. Either A. or B., depends on the mixture composition
