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Ethanol Production

Ethanol Production
Yeast is used in the production of

ethyl alcohol
curd
cheese
acetic acid

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Ethanol Production
The fermentor can be sterilized by

all of these
keeping it in the oven
boiling
steam under pressure

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

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

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Ethanol Production
How is air supply to the fermentor sterilized?

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

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Ethanol Production
High ethanol concentration

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

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Ethanol Production
Ethanol is produced by

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

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