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Ethanol Production

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

Impeller
Baffles
All of these
Sparger

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Ethanol Production
High ethanol concentration

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

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Ethanol Production
What are the fermentation conditions for the ethanol production?

pH 5; temperature 35°C
pH 5; temperature 30°C
pH 6; temperature 35°C
pH 6; temperature 30°C

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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
After the fermentation is over, ethanol is recovered by

filtration
centrifugation
cell disintegration
distillation

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Ethanol Production
How is air supply to the fermentor sterilized?

By heat filtration
Filtration through fibrous material
Filtration through granular material
All of these

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