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Ethanol Production

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

Bacillus
Pseudomonas
Yeast
E. coli

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Ethanol Production
Ethanol is produced by

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

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

Impeller
All of these
Baffles
Sparger

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Ethanol Production
The Zygomonas has a merit over yeast because

it has more osmotic tolerance to higher sugar concentration
it has more specific growth rate
it has high tolerance to ethanol
All of these

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Ethanol Production
The fermentor can be sterilized by

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

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Ethanol Production
High ethanol concentration

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

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