question_answer

Consider the following statements:

1. If air heated in a closed chamber, its dew point will increase

2. As relative humidity decreases the difference between the wet-bulb temperature and dew point will increase

3. In spray humidification process, the enthalpy of air will decrease

4. The dew-point temperature is always an indication of moisture content of the air

A) 1 and 2            

B) 2 and 4

C) 1 and 3            

D) 3 and 4