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26. Wine is obtained after alcoholic fermentation of

A. rice
B. wheat
C. grapes
D. barley

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27. After storage and recarbonation, leftover yeast is separated by

A. centrifugation
B. filtration
C. cell disruption
D. need not to be separated

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28. Sodium or potassium meta bisulfate is added to crushed grapes to

A. enhance the flavoring compound
B. check the undesirable organisms
C. maintain pH
D. all of the above

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29. A hydrometer

A. measures wine acid
B. requires a few drops of juice
C. measures alcohol in the wine
D. measures grape sugar

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30. Punching down is done

A. for the same reasons as pumping over
B. to extract tannin
C. both (a) and (b)
D.  to keep the cap dry

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