Refrigeration and Air Conditioning
Which of the following statement is correct?

All of the listed here
The constant enthalpy lines are also constant wet bulb temperature lines
The wet bulb and dry bulb temperature are equal at saturation condition
The wet bulb temperature is a measure of enthalpy of moist air

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Refrigeration and Air Conditioning
Environmental protection agencies advice against the use of chlorofluorocarbon refrigerants since

These react with water vapour and cause acid rain
These react with plants and cause greenhouse effect
These react with ozone layer
These react with oxygen and cause its depletion

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