Mass Transfer
Which of the following remains constant during sensible cooling process ?

Specific humidity
None of the listed here
Partial pressure of vapour
Specific humidity & Partial pressure of vapour

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Mass Transfer
Unsaturated air (with dry bulb temperature and dew point being 35°C and 18°C respectively) is passed through a water spray chamber maintained at 15°C. The air will be cooled

And humidified
And dehumidified with decrease in wet bulb temperature
At the same relative humidity
And dehumidified with increase in wet bulb temperature

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Mass Transfer
Humid volume is the total volume in m³ of 1 kg of

Gas plus its accompanying vapour at 1 atm. and room temperature
Vapour laden gas at 1 atm. and gas temperature
Vapour laden gas at 1 atm. and room temperature
Gas plus its accompanying vapour at 1 atm. and gas temperature

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Mass Transfer
Molecular diffusion is caused by the

Activation energy of the molecules
Thermal energy of the molecules
Transfer of molecules from low concentration to high concentration region
Potential energy of the molecules

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