ETHANOL PRODUCTION QUIZ

Yeast is used in the production of

cheese

ethyl alcohol

acetic acid

curd

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Impeller

Baffles

All of these

Sparger

TRUE ANSWER : ?
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The fermentor can be sterilized by

boiling

keeping it in the oven

steam under pressure

all of these

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After the fermentation is over, ethanol is recovered by

distillation

filtration

cell disintegration

centrifugation

TRUE ANSWER : ?
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As the fermentation for the ethanol production is over, the cells are separated to get the biomass of yeast cells that is used

as single cell protein for animal feed

All of these

as manure

for next fermentation

TRUE ANSWER : ?
YOUR ANSWER : ?

The Zygomonas has a merit over yeast because

All of these

it has more osmotic tolerance to higher sugar concentration

it has high tolerance to ethanol

it has more specific growth rate

TRUE ANSWER : ?
YOUR ANSWER : ?

Candida utilis is used for the fermentation of waste sulphate liquor since it ferments

pentoses only

none of these

both hexoses and pentoses

hexoses only

TRUE ANSWER : ?
YOUR ANSWER : ?

What are the fermentation conditions for the ethanol production?

pH 5; temperature 35°C

pH 6; temperature 35°C

pH 6; temperature 30°C

pH 5; temperature 30°C

TRUE ANSWER : ?
YOUR ANSWER : ?

S cerevisiae start producing ethanol with in

24 h

15 h

12 h

10 h

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YOUR ANSWER : ?

How is air supply to the fermentor sterilized?

Filtration through fibrous material

By heat filtration

Filtration through granular material

All of these

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YOUR ANSWER : ?

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