Question

What is the relative humidity on a day, when partial pressure of water vapour is 0.012 x 10⁵ Pa and temperature is 12°C? The saturated vapour pressure of water at this temperature is 0.016 x 10⁵ Pa.

(a) 68% 

(b) 52%

(c) 25% 

(d) 75%

Answer 1

Correct option (d) 75%

Explanation :

Given that saturated vapour pressure at 12°C = 0.016 x 10⁵ Pa

The partial pressure of water vapour at 12°C = 0.012 x 10⁵ Pa