or increase. 6. Which one of the following statements is correct? (a) Evaporative cooling and sensible cooling is the same (b) Evaporative cooling is a cooling and humidification process (c) Evaporative cooling is a cooling and dehumidification process (d) Evaporative cooling is not effective for hot and dry climates. 7. An air washer can work as a (a) filter only (b) humidifier only (c) dehumidifier only (d) all of the above. 8. The relative humidity, during sensible heating. (a) can increase or decrease (b) increases (c) decreases (d) remains constant. 9. The vapor pressure, during sensible heating of moist air, (a) increases (b) decreases (c) can increase or decrease d) remains constant. 10. The relative humidity, during heating and humidification, Ya) increases (b) decreases (c) may increase or decrease (d) remains constant.