Zero percent relative saturation means
(a) 100 % vapour in the air
(b) 75% vapour in the air
(c) 50% vapour in the air
(d) No vapour in the air
The question was posed to me in exam.
This is a very interesting question from Humidity topic in section Humidity Charts and Analysis of the Degrees of Freedom in Steady-State Processes of Chemical Process Calculation