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Beer And Wine(Biotechnology ) Questions and Answers
Home
Topic
Biotechnology
Beer And Wine
Question 1.
Candida utilis is used for the fermentation of waste sulphate liquor since it ferments
hexoses only
pentoses only
both hexoses and pentoses
none of these
Explanation:-
Answer: Option C. ->
both hexoses and pentoses
Answer:
(c).
both hexoses and pentoses
Question 2.
Yeast is used in the production of
ethyl alcohol
acetic acid
cheese
curd
Explanation:-
Answer: Option A. ->
ethyl alcohol
Answer:
(a).
ethyl alcohol
Question 3.
After the fermentation is over, ethanol is recovered by
centrifugation
distillation
filtration
cell disintegration
Explanation:-
Answer: Option B. ->
distillation
Answer:
(b).
distillation
Question 4.
S cerevisiae start producing ethanol with in
10 h
12 h
15 h
24 h
Explanation:-
Answer: Option B. ->
12 h
Answer:
(b).
12 h
Question 5.
Which of the following microorganisms help in the ethanol production?
Saccharomyces cerevisiae
Zygomonas mobilis
Saccharomyces uvarum
All of these
Explanation:-
Answer: Option D. ->
All of these
Answer:
(d).
All of these
Question 6.
The Zygomonas has a merit over yeast because
it has more osmotic tolerance to higher sugar concentration
it has high tolerance to ethanol
it has more specific growth rate
all of the above
Explanation:-
Answer: Option D. ->
all of the above
Answer:
(d).
all of the above
Question 7.
Which of the following organism is not used in any of the traditional industrial fermentation?
E. coli
Yeast
Bacillus
Pseudomonas
Explanation:-
Answer: Option A. ->
E. coli
Answer:
(a).
E. coli
Question 8.
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 the above
Explanation:-
Answer: Option A. ->
it doesn't contain amylases to hydrolyze starch
Answer:
(a).
it doesn't contain amylases to hydrolyze starch
Question 9.
How is air supply to the fermentor sterilized?
By heat filtration
Filtration through fibrous material
Filtration through granular material
All of the above
Explanation:-
Answer: Option D. ->
All of the above
Answer:
(d).
All of the above
Question 10.
Which of the following is used to check vortex and to improve aeration efficiency in a fermentor?
Impeller
Baffles
Sparger
All of these
Explanation:-
Answer: Option B. ->
Baffles
Answer:
(b).
Baffles
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