Question

What is the unit of flow rate (F)?

(a) dm^3 h^-1

(b) km^3 h^-1

(c) ml^3 h^-2

(d) dm^2 h^-2

The question was posed to me in an international level competition.

This is a very interesting question from Microbial Growth Kinetics topic in division Microbial Growth Kinetics of Fermentation Technology

Answer 1

The correct choice is (a) dm^3 h^-1

Easy explanation: Flow rate is the product of dilution rate and volume of the vessel. The unit of dilution rate is h^-1 and that of the volume of the vessel is dm^3. Therefore, the unit of flow rate is dm^3 h^-1.