remains constant

increases

decreases

none of these

R-11

R-12

R-22

Ammonia

Correct

Incorrect

Ammonia

Carbon dioxide

Sulphur dioxide

Flourine

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.

all of the above