Which of the following sulphides are yellow ?

Options

A. `CdS`
B. `As_(2)S_(3)`
C. `SnS_(2)`
D. `ZnS`

Answer

To determine which of the given sulphides are yellow, we will analyze each option one by one based on their colors.

### Step-by-Step Solution:

1. **Identify the first sulphide: Cadmium Sulphide (CdS)**
- Cadmium sulphide is known to be yellow in color. It can also appear as yellow-brown.
- **Conclusion:** Cadmium sulphide is yellow.

2. **Identify the second sulphide: Arsenic Trisulphide (As2S3)**
- Arsenic trisulphide is described as a dark yellow solid.
- **Conclusion:** Arsenic trisulphide is yellow.

3. **Identify the third sulphide: Tin Disulphide (SnS2)**
- Tin disulphide is known to be golden yellow in color.
- **Conclusion:** Tin disulphide is yellow.

4. **Identify the fourth sulphide: Zinc Sulphide (ZnS)**
- Zinc sulphide is typically white in color.
- **Conclusion:** Zinc sulphide is not yellow.

### Final Answer:
The sulphides that are yellow are:
- A) Cadmium Sulphide (CdS) - Yellow
- B) Arsenic Trisulphide (As2S3) - Dark Yellow
- C) Tin Disulphide (SnS2) - Golden Yellow

Thus, the correct options are A, B, and C.