A continuous reactor at steady state contains 0.04 g.l-1 of biomass and 0.02 g.l

CuriousTab

Home Aptitude

Question
A continuous reactor at steady state contains 0.04 g.l^-1 of biomass and 0.02 g.l^-1 of phenol. The feed contained 0.1 g.l^-1 of phenol. The biomass yield would be
Options
A. 0.4 g.g^-1
B. 0.5 g.g^-1
C. 1.0 g.g^-1
D. 5.0 g.g^-1

Correct Answer

0.5 g.g^-1

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
Options
A. 0.793atml/mmol
B. 0.207atml/mmol
C. 1.26 atml/mmol
D. 8.74 atml/mmol

Comments