_____________ is the temperature at which a gas-vapor mixture becomes saturated, when cooled at constant total pressure out of contact with a liquid ?

Related Mcqs:

1. The temperature to which a vapour gas mixture must be cooled (at varying humidity) to become saturated is called the ______________ temperature?

   A. Dew point
   B. Wet bulb
   C. Dry bulb
   D. None of these

2. If the solubilities of different components (in a liquid-liquid extraction system) increase with rise in temperature, then the temperature above which they dissolve completely is known as the critical solution temperature (CST or consolute temperature). If solubilities increase with decrease in temperature, then CST is the temperature below which they dissolve completely. If a binary system has no critical solution temperature, it implies that___________________?

   A. The system comprises of partially miscible liquids
   B. The system comprises of miscible liquids
   C. The system comprises of an azeotrope
   D. On heating, a vapor phase will appear; while on cooling, a solid phase will appear

3. _____________ temperature is the steady state temperature attained by a small amount of liquid evaporating into a large quantity of unsaturated gas-vapor mixture ?

   A. Dry bulb
   B. Wet bulb
   C. Dew point
   D. None of these

4. The wet and ‘dry bulb temperature for a vapour-gas mixture are 25°C and 30°C respectively. If the mixture is heated to 45°C at constant pressure, the wet bulb temperature will be ______________ °C ?

   A. 25
   B. > 25
   C. < 25
   D. – 25

5. The wet and ‘dry bulb temperature for a vapour-gas mixture are 25°C and 30°C respectively. If the mixture is heated to 45°C at constant pressure, the wet bulb temperature will be ______________ °C?

   A. 25
   B. > 25
   C. < 25
   D. – 25

6. On moving the feed line (q-line) from saturated liquid feed (vertical position) to saturated vapor feed (horizontal feed), if the slope of both the operating lines are to be increased, then it will result in______________________?

   A. Greater degree of separation with a fixed number of trays
   B. Increased reboiler load
   C. Increased reflux ratio
   D. None of these

7. 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

8. 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

9. The relative saturation of a partially saturated mixture of vapour and gas can be increased by ________________ of the mixture?

   A. Reducing the total pressure
   B. Increasing the total pressure
   C. Reducing the temperature
   D. Both B. and C.

10. 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