Question

At `30^(@)C`, the actual amount of water vapour present in 1 `m^(3)` of air is 15 g, whereas 30 g of water vapour is required to saturate air at the same temperature. Find the relative humidity.

Answer 1

`"Relative humidity "=(15)/(30)xx100=50%" at "30^(@)C`
A relative humidity of about `50%` is considered comfortable. However, if is more than `50%`, then it becomes uncomfortable as the perspiration from our body does not evaporate easily. If it is less than `20%`, then the air becomes dry which, in turn, makes the skin dry.