Given below are few respiratory disorders. Identify occupational respiratory disorders among these.
(i) Coryza , (ii) SARS
(iii) Silicosis , (iv) Asbestosis
(v) Emphysema

Options

A. `(i)` and `(ii)
B. `(i)` and `(v)`
C. `(iii)` and `(iv)`
D. `(i), (ii)` and `(v)`

Explanation

To identify the occupational respiratory disorders among the given options, we will analyze each disorder based on its cause and the context in which it typically occurs.

1. **Coryza**: This is commonly known as the common cold and is caused by viral infections, particularly rhinoviruses. It is not related to occupational exposure.
- **Hint**: Think about whether the disorder is caused by a virus or an environmental factor related to work.

2. **SARS (Severe Acute Respiratory Syndrome)**: This is a viral respiratory illness caused by the coronavirus. Like coryza, it is not specifically linked to occupational exposure.
- **Hint**: Consider if the disorder is linked to specific work environments or is more general in nature.

3. **Silicosis**: This is a lung disease caused by inhaling fine silica dust, often found in industries such as mining, construction, and sandblasting. It is a well-known occupational respiratory disorder.
- **Hint**: Look for disorders that are caused by inhaling specific materials found in certain jobs.

4. **Asbestosis**: This is caused by inhaling asbestos fibers, commonly affecting workers in construction, shipbuilding, and industries that use asbestos. This is also an occupational respiratory disorder.
- **Hint**: Identify if the disorder is associated with specific materials used in certain occupations.

5. **Emphysema**: This is a chronic lung condition that is primarily associated with smoking and long-term exposure to irritants, but it is not classified as an occupational disorder.
- **Hint**: Consider whether the condition is primarily caused by lifestyle choices or environmental factors unrelated to specific jobs.

**Conclusion**: The occupational respiratory disorders among the given options are **(iii) Silicosis** and **(iv) Asbestosis**.

### Summary of Steps:
1. Analyze each disorder based on its cause.
2. Determine if the disorder is linked to specific occupational exposures.
3. Identify silicosis and asbestosis as the occupational respiratory disorders.