Online Biochemical Engineering Test - Biochemical Engineering Test - Random

Instruction:

  • This is a FREE online test. Beware of scammers who ask for money to attend this test.
  • Total number of questions: 20.
  • Time allotted: 30 minutes.
  • Each question carries 1 mark; there are no negative marks.
  • DO NOT refresh the page.
  • All the best!

Marks : 2/20


Total number of questions
20
Number of answered questions
0
Number of unanswered questions
20
Test Review : View answers and explanation for this test.

1.
The slope of Lineweaver Burk plot for Michaelis Menten equation is
Vmax/Km
Km/Vmax
1/Km
Km.Vmax
Your Answer: Option
(Not Answered)
Correct Answer: Option

2.
α-amylase is an endo enzyme which requires
Ca
Cu
Mn
None of these
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(Not Answered)
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3.
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
0.4 g.g-1
0.5 g.g-1
1.0 g.g-1
5.0 g.g-1
Your Answer: Option
(Not Answered)
Correct Answer: Option

4.
The fastest route of NADH reoxidation is
aerobic respiration
anaerobic respiration
fermentation
decomposition
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(Not Answered)
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5.
Which of the following is not correct for the Monod model and the Michaelis Menten Model?
The Michaelis Menten Model was derived from a curve fitting exercise
The Michaelis Menten model was derived from an analysis of the mechanism of microbial growth
The Monod model was derived from an analysis of the mechanism of microbial growth
All of the above
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6.
A functional relationship between the specific growth rate and essential compounds concentration was proposed by Monod in
1958
1946
1942
1950
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7.
Stirred tank fermenter (STF) can be employed for
aerobic fermentation of a wide range of cells including microbial, animal and plant cells
anaerobic fermentation of a wide range of cells including microbial, animal and plant cells
Both (a) and (b)
anaerobic fermentation of plant cells only
Your Answer: Option
(Not Answered)
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8.
The power consumption in a stirring vessel can be assessed by using a
dynamometer
strain gauge attached to agitator shaft
watt meter attached to agitator motor
all of these
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(Not Answered)
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9.
A cylindrical reactor has a liquid volume of 100,000 litres. It has an aspect ratio the ratio of the channel height to width of 1:1. The height of the liquid in the reactor will be approximately:
1.0 m
3.0 m
5.0 m
7.0 m
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(Not Answered)
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10.
Power number (Np) is also known as
Froude's number
Bond's number
Newton's number
Rayleigh's number
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(Not Answered)
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11.
Small propellers turn at the speed of either
20 or 150 rpm
150 or 300 rpm
400 or 800 rpm
1150 rpm or 1750 rpm
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(Not Answered)
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12.
Impeller damage can be minimized by
using specially designed axial flow impellers
using radial flow impellers
using Intermig impellers
all of the above
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(Not Answered)
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13.
A rheopectic fluid is one in which the viscosity
is constant regardless of the stirrer speed or mixing time
changes during mixing but returns to its original state after mixing
increases with mixing time
decreases with mixing time
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(Not Answered)
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14.
In sparged mammalian cell bioreactors, the cell damage is caused because of
shear stress arising during mixing of the cell culture fluid
shear stresses arising from the breakup of bubbles at the liquid surface
shear stresses between bubbles in foam at the liquid surface
all of the above
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(Not Answered)
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15.
Pluronic F68 is added to cell culture media as
a nutrient
a shear protectorant
to increase oxygen transfer rates
all of these
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(Not Answered)
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16.
Reynolds number for turbulent flow over a plate should be more than
5 x 10-5
106
5 x 105
500
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(Not Answered)
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17.
The collection efficiency by interception increases with the
increasing particle diameter
increasing air flow velocity
both (a) and (b)
increasing particle size
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(Not Answered)
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18.
The heat conduction in dry air is
less rapid than in steam
more rapid than in steam
similar to steam
none of these
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(Not Answered)
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19.
Filtration leaf test results indicate that the filtration rate of a protein product is 100 dry lbs/(ft2 hr). What size production filter would be required to obtain 100 dry lbs of filter cake/hr?
1.54 ft2
3.08 ft2
65 ft2
65 lbs/ ft2.hr
Your Answer: Option
(Not Answered)
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20.
The methods used for biological treatment are
lagoon
activated sludge process
oxidation ditches
all of these
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(Not Answered)
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*** END OF THE TEST ***
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