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Ethanol Production

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

All of these
Baffles
Impeller
Sparger

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Ethanol Production
High ethanol concentration

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

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Ethanol Production
What are different substrates used for ethanol production?

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

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

All of these
Sparger
Impeller
Baffles

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

Saccharomyces cerevisiae
All of these
Saccharomyces uvarum
Zygomonas mobilis

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