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VINEGAR AND CITRIC ACID

Vinegar and Citric Acid
In submerged process for the fermentation to produce citric acid,

both (a) and (b)
A. niger floats on the surface of solution
Fungal mycelium grows through out the solution in a deep tank
A. niger is used with solid substrate as sweet potato

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Vinegar and Citric Acid
Which substrate is used in the fermentation of citric acid?

Sucrose
Beet molasses
Starch hydrolysate
All of these

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Vinegar and Citric Acid
Alegar is a type of vinegar produced from

fruit juices
malted grain
ethanol
ale

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Vinegar and Citric Acid
During recovery step of citric acid, calcium citrate formed is treated with which of the following acid to precipitate calcium?

H2SO4
HNO3
None of these
HCl

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Vinegar and Citric Acid
Vinegar production consists of

anaerobic fermentation followed by aerobic fermentation
anaerobic fermentation
aerobic fermentation
aerobic fermentation followed by anaerobic fermentation

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