Beer and Wine
In a hot climate, grapes lose acidity because

enough malic acid is not made
of break down of tartaric acid
of break down of malic acid
enough tartaric acid is not made

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Beer and Wine
Wine yeast

is sensitive to sulphur di oxide
is resistant to sulphur di oxide
None of these
shows enhanced enzyme production in presence of sulphur di oxide

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Beer and Wine
Grist is

malted barley
coagulated protein obtained during boiling
an aqueous extract of malt
coarse powder obtained after milling of malted barley

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