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Fermentation Reactors - Medical Science

Q1:

A continuous reactor has a dilution rate of 0.5 h-1. Its residence time would be

A ln(2)/0.5

B ln(2) x 0.5

C 0.5 h

D 2 h

ANS:D - 2 h

Residence time= 1/dilution time.
Residence time = 1/ 0.5(1/h).
Residence time = 2hours.