| 1. Air is saturated when the relative humidity is 100 percent |
| 2. Air is saturated when dew point is reached |
| 3. Air is saturated when freezing point is reached |
A) 1 and 2 only
B) 2 and 3 only
C) 1 and 3 only
D) 1,2 and 3
Correct Answer: A
Solution :
If there is no moisture in the air, air may not be saturated even when freezing point is reached.
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