Which one of the following pairs is wrongly matched

Options

A. Streptomycetes Antibiotic
B. Methanogens Gobar gas
C. Yeast Ethanol
D. Coliforms Vinegar

Answer

To solve the question "Which one of the following pairs is wrongly matched?", we will analyze each pair of microorganisms and their corresponding products one by one.

### Step-by-Step Solution:

1. **Analyze the First Pair: Streptomycetes - Antibiotic**
- Streptomycetes are gram-positive bacteria known for producing a variety of antibiotics, including streptomycin and tetracycline.
- **Conclusion:** This pair is correctly matched.

2. **Analyze the Second Pair: Methanogens - Gobergas**
- Methanogens are a type of archaebacteria that produce methane gas (gobergas) under anaerobic conditions, particularly from organic matter like cow dung.
- **Conclusion:** This pair is correctly matched.

3. **Analyze the Third Pair: Yeast - Ethanol**
- Yeast, specifically Saccharomyces cerevisiae, is used in the fermentation process to convert sugars into ethanol under anaerobic conditions.
- **Conclusion:** This pair is correctly matched.

4. **Analyze the Fourth Pair: Coliforms - Vinegar**
- Coliforms are a group of bacteria, often used as indicators of fecal contamination in water. They are not used in the production of vinegar.
- Vinegar is produced by specific bacteria such as Acetobacter and Gluconobacter, which convert ethanol into acetic acid.
- **Conclusion:** This pair is wrongly matched.

### Final Answer:
The wrongly matched pair is **Coliforms - Vinegar (Option D)**.

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