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In vinegar production, which bacterial mixture is added to ethanol so that it is converted into acetic acid?
APseudomonas and Vibrio
BLactobacillus and Streptococcus
CAzotobacter and Geobacter
DAcetobacter and Glucanobacter
Answer & Solution
Correct answer: D. Acetobacter and Glucanobacter
1. Ethanol is first obtained by yeast fermentation of carbon compounds.
2. A mixture of Acetobacter and Glucanobacter is added to the ethanol.
3. These degrade it to acetic acid and by-products.
4. The other pairs handle dairy, farming or pollution clean-up, not vinegar.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology Part 2, Ch 7 "Introduction to Microbiology", p.89_
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