Practice question

MCQ

Question

In a fed batch process for the production of an antibiotic, the dissolved oxygen (DO) level was found to be falling below 30%. If the DO level of 30% is to be maintained in the reactor (without altering the composition of oxygen-air mixture, aeration rate and agitation) then we need to:

Options

Choose one · Correct answer highlighted

increase the feed rate decrease the feed rate Correct increase the concentration of feed decrease the volume of the broth by partial withdrawal

Explanation

The principle of quantitative reasoning explains that ratio, percentage and series logic determine correct calculation. Hence decrease the feed rate fits best because it meets mathematical and logical criteria, as documented in authoritative sources on aptitude and reasoning.

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