Q175
Atmospheric phenomenon like fog and dew require a minimum of . . . . . . . . percent Relative Humidity
A.
45%
B.
35%
C.
75%
AnswerD.
55%
Answer: Option C
Solution
Answer: Option C
Solution:
Fog normally occurs from either added moisture in the air or falling ambient air temperature. It normally occurs at a relative humidity near 100% but a minimum of at least 75% relative humidity is required for an atmospheric phenomenon like fog and dew.