Ammonia is not used

Options

A. In anaesthesia
B. In medicine
C. In cold storages
D. For preparation of artificial silk

Answer

To solve the question "Ammonia is not used in which of the following applications: anesthesia, medicine, cold storage, or for preparation of artificial silk?", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Applications of Ammonia**:
- Ammonia (NH3) is a compound that has various applications in different fields. It is important to know where it is typically used.

2. **Analyze Each Option**:
- **Anesthesia**: Ammonia is not commonly used as an anesthetic agent. Anesthetics are typically gases or volatile liquids that induce anesthesia, and ammonia does not fit this category.
- **Medicine**: Ammonia has some medicinal uses, such as in certain treatments and as a cleaning agent.
- **Cold Storage**: Ammonia is used in refrigeration systems and cold storage due to its effective heat absorption properties.
- **Preparation of Artificial Silk**: Ammonia is involved in the production of certain synthetic fibers, including artificial silk.

3. **Determine the Incorrect Application**:
- Based on the analysis, ammonia is not used in anesthesia, making this the correct answer to the question.

4. **Conclusion**:
- The correct answer is that ammonia is not used in **anesthesia**.

### Final Answer:
Ammonia is not used in **anesthesia**.

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