Exercise: Ethanol Production

Questions for: Ethanol Production

Which of the following is used for aeration in a fermentor?
A:
Impeller
B:
Baffles
C:
Sparger
D:
All of these
Answer: C
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What are different substrates used for ethanol production?
A:
Starch containing substrate
B:
Juices from sugarcane or molasses or sugar beet
C:
Waste product from wood or processed wood
D:
All of the above
Answer: D
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Which of the following is used to check vortex and to improve aeration efficiency in a fermentor?
A:
Impeller
B:
Baffles
C:
Sparger
D:
All of these
Answer: B
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If starch containing substrates are used for ethanol production, yeast strain can't be used directly because
A:
it doesn't contain amylases to hydrolyze starch
B:
starch is not a suitable substrate for the production of ethanol
C:
it is converted to pentose sugar
D:
none of the above
Answer: A
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