Question

On wet basis, the denominator stays constant whereas in moisture content on dry basis, the denominator changes.

(a) True

(b) False

The question was asked at a job interview.

Question is taken from Unit Operations topic in division Heat Transfer Equipment, Microwave Heating, Evaporation, Diffusion and Mass Transfer and Dehydration of Food Engineering

Answer 1

Right option is (b) False

Best explanation: Wet basis involves the amount of moisture content also in the denominator which at different times will be different. Whereas, in dry basis analysis, the denominator is only the weight of the solid. Hence it does not change. Therefore, the correct sentence is – On dry basis, the denominator stays constant whereas in moisture content on wet basis, the denominator changes.