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Discussion
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Biochemical Engineering
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Enzymes and Application
See What Others Are Saying!
Question
Citrus juice debittering can be carried out using
Options
A. limoninase
B. inulinase
C. anthocyanase
D. None of these
Correct Answer
limoninase
More questions
1. Henry's law relates
Options
A. the partial pressure of oxygen and the saturation concentration of oxygen in the liquid
B. the oxygen transfer rate and the bubble size
C. the oxygen transfer rate and the temperature
D. the oxygen transfer rate to the partial pressure of oxygen in the liquid
Show Answer
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Discuss
Correct Answer: the partial pressure of oxygen and the saturation concentration of oxygen in the liquid
2. The methods used for biological treatment are
Options
A. lagoon
B. activated sludge process
C. oxidation ditches
D. all of these
Show Answer
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Correct Answer: all of these
3. BOD stands for
Options
A. biochemical oxygen demand
B. british oxygen demand
C. british oxygen depletion
D. biological oxygen depletion
Show Answer
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Correct Answer: biochemical oxygen demand
4. The relationship between the del factor, temperature and time is given as
Options
A. ? = A.t. e
-E/RT
B. ? = 1/(A.t. e
-E/RT
)
C. ? = A.t. e
E/RT
D. ? = A.t.T
Show Answer
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Correct Answer: ? = A.t. e
-E/RT
5. The reduction of number of cells from 10
10
to one will result into the del factor (?) of
Options
A. 1
B. 10
C. 23
D. 10
3
Show Answer
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Correct Answer: 23
6. Diauxie is
Options
A. growth factors
B. microbiological die off
C. the simultaneous uptake of nutrients
D. the stagewise uptake of nutrients
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Correct Answer: the stagewise uptake of nutrients
7. The K used in the equation for
X
10
=2.303/K depends upon
Options
A. nature of the filter material
B. linear velocity of the air passing through filter
C. both (a) and (b)
D. thickness of the filter
Show Answer
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Correct Answer: both (a) and (b)
8. For the extractions operation, the selectivity should be
Options
A. > 1
B. < 1
C. 1
D. zero
Show Answer
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Correct Answer: > 1
9. The function of a mechanical seal is to
Options
A. prevent contaminants entering the reactor
B. prevent cells from leaving the reactor
C. both (a) and (b)
D. prevent air to enter
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Correct Answer: both (a) and (b)
10. Which of the following physical method is used as germicidal in modern time for the treatment of drinking water?
Options
A. Chlorination
B. Treating with potassium permagnate
C. UV radiation
D. Treating with bleaching powder
Show Answer
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Discuss
Correct Answer: UV radiation
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Enzymes and Application
Enzymes and Kinetics
Fermentation Kinetics
Fermentation Reactors
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Immobilized Enzyme
Sterilization
Water Treatment