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Which one of the following pairs is wrongly matched?

1. Yeast - ethanol
2. Streptomyces - antibiotic
3. Coliforms - vinegar
4. Methanogens - gobar gas

Correct answer: Coliforms - vinegar

Solution

Yeast produces ethanol, Streptomyces is a major source of antibiotics, and methanogens help generate gobar gas (biogas). Vinegar is produced by acetic acid bacteria such as Acetobacter, so pairing it with coliforms is incorrect.

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