15. Vinegar production consists of
A.aerobic fermentation
B.anaerobic fermentation
C.aerobic fermentation followed by anaerobic fermentation
D.anaerobic fermentation followed by aerobic fermentation
16. Cider vinegar is produced from
A.fruit juices
B.malted grain
C.ethanol
D.ale
17. Ethanol is oxidized to acetic acid aerobically using
A.Acetobacter
B.Gluconobacter
C.both (a) and (b
D.Lactobacillus
18. Malt vinegar is produced from
A.fruit juices
B.malted grain
C.ethanol
D.ale
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