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Ethanol Production

Ethanol Production
Which of the following is used for aeration in a fermentor?

Sparger
Baffles
Impeller
All of these

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Ethanol Production
Ethanol is produced by

batch fermentation
both (a) and (b)
continuous fermentation
none of these

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Ethanol Production
Yeast is used in the production of

acetic acid
cheese
ethyl alcohol
curd

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Ethanol Production
If starch containing substrates are used for ethanol production, yeast strain can't be used directly because

starch is not a suitable substrate for the production of ethanol
it doesn't contain amylases to hydrolyze starch
None of these
it is converted to pentose sugar

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Ethanol Production
High ethanol concentration

promotes yeast growth
inhibits yeast growth
promotes bacterial growth
inhibits bacterial growth

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Ethanol Production
What are different substrates used for ethanol production?

All of these
Waste product from wood or processed wood
Juices from sugarcane or molasses or sugar beet
Starch containing substrate

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