Question

The residence time (in min) for the reactants at a flow rate of 5 \(\frac{litre}{min}\) inside a reactor of volume 10 litre is ____

(a) 5

(b) 1

(c) 10

(d) 2

This question was addressed to me in an interview.

Enquiry is from Conversion and Reactor Sizing in division Ideal Reactors for a Single Reaction, Conversion and Reactor Sizing of Chemical Reaction Engineering

Answer 1

The correct answer is (d) 2

Explanation: Residence time = \(\frac{volume}{volumetric \, flow \, rate} = \frac{10}{5} \) = 2.