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Ethanol Production

Ethanol Production
Ethanol is produced by

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

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

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

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Ethanol Production
Which of the following is used to check vortex and to improve aeration efficiency in a fermentor?

Sparger
Impeller
All of these
Baffles

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Ethanol Production
After the fermentation is over, ethanol is recovered by

filtration
distillation
cell disintegration
centrifugation

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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
Yeast is used in the production of

curd
cheese
ethyl alcohol
acetic acid

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