Related Questions

The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour in the same volume of saturated air at the same temperature and pressure, is called
A Humidity ratio
B Relative humidity
C Absolute humidity
D Degree of saturation
The ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in the same mass of dry air when it is saturated at the same temperature and pressure, is called
A Humidity ratio
B Relative humidity
C Absolute humidity
D Degree of saturation
A mixture of dry air and water vapour, when the air has diffused the maximum amount of water vapour into it, is called
A Dry air
B Moist air
C Saturated air
D Specific humidity
Steady state temperature reached by a small amount of liquid evaporating into a large amount of unsaturated vapour-gas mixture is called the __________ temperature.
A Dry-bulb
B Wet-bulb
C Dew point
D Adiabatic saturation
Dust laden air can be purified using a
A Cyclone separator
B Bag filter
C Gravity settler
D Tubular centrifuge
When the air is passed through an insulated chamber having sprays of water maintained at a temperature higher than the dew point temperature of entering air but lower than its dry bulb temperature, then the air is said to be
A Cooled and humidified
B Cooled and dehumidified
C Heated and humidified
D Heated and dehumidified
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
When an unsaturated air-water mixture is heated at constant pressure, then
A The partial pressure of water vapour increases
B The specific humidity decreases
C The relative humidity increases
D The relative humidity decreases
Which of the following winds are hot dust laden and blow from Sahara desert towards Mediterranean Region?
A Sirocco
B Loo
C Foehn
D Mistral
Metallic wire mesh is used as a filtering medium for the separation of dust from dust laden gas in case of a/an
A Air filter
B Bag filter
C Venturi scrubber
D Hydrocyclones

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