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Ethanol Production

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

centrifugation
cell disintegration
distillation
filtration

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Ethanol Production
As the fermentation for the ethanol production is over, the cells are separated to get the biomass of yeast cells that is used

as manure
as single cell protein for animal feed
All of these
for next fermentation

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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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Ethanol Production
How is air supply to the fermentor sterilized?

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

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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 is converted to pentose sugar
it doesn't contain amylases to hydrolyze starch
None of these

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Ethanol Production
Candida utilis is used for the fermentation of waste sulphate liquor since it ferments

none of these
both hexoses and pentoses
hexoses only
pentoses only

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