The relative humidity on a day, when partial pressure of water vapour is `0.012xx10^(5)` Pa at `12^(@)C` is (take vapour pressure of water at this temperature as `0.016xx10^(5)` Pa)

Options

A. `70% `
B. 0.4
C. 0.75
D. 0.25

Answer

C

Explanation

Relative humidity ` = ("Partial pressure of water vapour")/("Vapour pressure of water")`
`= (0.012 xx 10^5)/(0.016 xx 10^5) = 0.75 = 75 %`