Atmospheric phenomenon like fog and dew require a minimum of . . . . . . . . percent Relative Humidity

A. 45%

B. 35%

C. 75%

D. 55%

Answer: Option C

Solution(By Examveda Team)

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.