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Ethanol Production

Ethanol Production
The fermentor can be sterilized by

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

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

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

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

cell disintegration
filtration
distillation
centrifugation

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

Sparger
All of these
Baffles
Impeller

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Ethanol Production
What are the fermentation conditions for the ethanol production?

pH 5; temperature 30°C
pH 5; temperature 35°C
pH 6; temperature 30°C
pH 6; temperature 35°C

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Ethanol Production
S cerevisiae start producing ethanol with in

10 h
12 h
15 h
24 h

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