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Industrially Useful Microbial Processes

Industrially Useful Microbial Processes
Vinegar is a fermentation derived food product containing not less than

25% acetic acid
6% acetic acid
4% acetic acid
15% acetic acid

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Industrially Useful Microbial Processes
A major organism used in commercial bioleaching for copper recovery is

Aspergillus niger
Desulfovibrio desulfuricans
Thiobacillus ferrooxidans
Pseudomonas aeruginosa

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Industrially Useful Microbial Processes
Which of the following is a heterofermentative micro-organism?

Leuconostoc mesenteroides
Lactobacillus pentose
Lactobacillus bulgaricus
Lactobacillus delbrueckii

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Industrially Useful Microbial Processes
The major organism used in the microbial production of citric acid is

Lactobacillis delbrueckii
Rhizopus nigrificins
Penicillin notatum
Aspergillus niger

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Industrially Useful Microbial Processes
Which of the following substance is employed to neutralize the lactic acid as it is produced (because lactic acid bacteria do not tolerate high concentrations of acid?

(NH4)2 HPO4
MgSO4
CaCO3
Na2SO4

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Industrially Useful Microbial Processes
Which of the following is not an industrial product made by the fungus Aspergillus niger?

Citric acid
Gluconic acid
Lysine
Galactosidase

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