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Ethanol Production

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

filtration
distillation
centrifugation
cell disintegration

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Ethanol Production
Which of the following organism is not used in any of the traditional industrial fermentation?

Pseudomonas
Bacillus
Yeast
E. coli

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Ethanol Production
What are different substrates used for ethanol production?

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

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

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

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Ethanol Production
Which of the following microorganisms help in the ethanol production?

Saccharomyces uvarum
Saccharomyces cerevisiae
Zygomonas mobilis
All of these

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Ethanol Production
High ethanol concentration

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

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