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Industrially Useful Microbial Processes

Industrially Useful Microbial Processes
The maximum concentration of ethanol that is achieved by successive distillation of fermentation broth in continuous stills is

95%
70%
60%
99%

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Industrially Useful Microbial Processes
During fermentation, pyruvic acid is converted into organic products such as

citric acid and isocitric acid
glucose and fructose
ethyl alcohol and lactic acid
starch and cellulose

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Industrially Useful Microbial Processes
Which of the following microorganism produces only L(+) - lactic acid without further racemization ?

Lactobacillus bulgaricus
Lactobacillus delbrueckii
Rhizopus oryzae
Leuconostoc mesenteroides

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Industrially Useful Microbial Processes
The Candida species require fermentation equipment lined with plastic because they are extremely sensitive to

traces of cobalt
traces of iron
none of these
traces of nickel

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Industrially Useful Microbial Processes
Which of the following Ascomycetes are used for riboflavin production?

Ashbya gossypii
Both (a) and (b)
Eremnothecium ashbyii
Candida guilliermondia

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Industrially Useful Microbial Processes
Riboflavin is a by-product of __________ fermentation carried out by Clostridium spp.

citric acid
acetone butanol
streptomycin
ethanol

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