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Vinegar and Citric Acid

Vinegar and Citric Acid
Spirit vinegar is produced from

fruit juices
ale
ethanol
malted grain

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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?

HNO3
HCl
None of these
H2SO4

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

malted grain
ale
ethanol
fruit juices

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Vinegar and Citric Acid
What is the pH of the medium when molasses is used as substrate for the production of citric acid?

6
4
5
3

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Vinegar and Citric Acid
Malt vinegar is produced from

malted grain
ethanol
fruit juices
ale

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

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

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