Argol, a brown crust, formed during the fermentation of grape juice contains

{C O}_{2}

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Fused oil

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Potassium hydrogen tartarate

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lye

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Solution

The correct option is C Potassium hydrogen tartarate
After the fermentation of grape juice, a brown crystalline crust is formed. This is known as Agrol or wine-lees and it is tartaric acid in the form of the acid potassium salt.
So, the correct answer is 'Potassium hydrogen tartarate'.

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B_{12}

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