Which of the following describes the mixing ratio?
A)It changes with temperature.
B)It is expressed in grams of water vapour per kilogram of dry air.
C)It increases with the increase of a given volume of air.
D)It is a relative measure of water vapour.

Question

Quizplus · Accepted Answer

The mixing ratio is expressed in grams of water vapour per kilogram of dry air. This is a specific measure of the amount of water vapour in the air compared to the amount of dry air.

Answer: A
 The mixing ratio changes with temperature. As the temperature increases, the air has the capacity to hold more water vapour, so the mixing ratio will increase. Conversely, as the temperature decreases, the mixing ratio will decrease.

Answer: D
 The mixing ratio is not a relative measure of water vapour. Relative humidity is a relative measure that indicates how close the air is to being saturated with water vapour. Mixing ratio is a specific measure of the amount of water vapour in the air compared to the amount of dry air.

Therefore, the best choices are B and A.

Which of the Following Describes the Mixing Ratio