The power required by an impeller in a gas sparged system compare to the power required by impeller operating at same speed in a gas free liquid is usually
Options
A. lesser
B. higher
C. same
D. may be lesser or higher depending upon the geometry
Correct Answer
lesser
More questions
1. Which category of enzymes belongs to class two in the international classification?
4. Two continuous bioreactors containing the same organisms, fed with the same feed at the same dilution rate were compared. Reactor 1 started with an initial concentration of glucose of 10 g.l-1, while reactor 2 contained 0.1 g.l-1 of glucose at the start of the process then at steady state
Options
A. the concentration of glucose in reactor 1 would be greater than that in reactor 2
B. the concentration of glucose in reactor 1 would be equal to reactor 2
C. the concentration of glucose in reactor 1 would always be zero.
D. the concentration of glucose in reactor 1 would be less than that in reactor 2
9. At 25°C, the saturation concentration of oxygen in water is 1.26 mmol/l and the partial pressure of oxygen is 1 atm. The Henry's law constant will be