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Ethanol Production

Ethanol Production
The fermentor can be sterilized by

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

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

Yeast
Bacillus
Pseudomonas
E. coli

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

Impeller
Sparger
All of these
Baffles

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

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

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

filtration
cell disintegration
centrifugation
distillation

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Ethanol Production
S cerevisiae start producing ethanol with in

12 h
15 h
10 h
24 h

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