For an air(A)-water vapour(B) mixture, the partial pressure of the air is 5 pa and the total pressure of the system is 15 pa. The absolute humidity in mass of air/mass of water vapour is
(a) 0.805
(b) 0.311
(c) 0.705
(d) 0.411
This question was posed to me during an online interview.
The doubt is from Humidification-Operation in section Humidification Operations of Mass Transfer