Which of the following sulphides is white?

Options

A. `CdS`
B. `PbS`
C. `ZnS`
D. `SnS`

Answer

To determine which of the following sulfides is white, we will analyze the colors of the given metal sulfides: CdS, PbS, ZnS, and SnS.

### Step-by-Step Solution:

1. **Identify the Sulfides**: The sulfides we need to analyze are:
- CdS (Cadmium Sulfide)
- PbS (Lead Sulfide)
- ZnS (Zinc Sulfide)
- SnS (Tin Sulfide)

2. **Research the Colors of Each Sulfide**:
- **CdS**: Cadmium sulfide is known to be yellow in color.
- **PbS**: Lead sulfide is recognized for its black color.
- **ZnS**: Zinc sulfide is known to be white in color.
- **SnS**: Tin sulfide is typically brown in color.

3. **Compare the Colors**: Now we compare the colors of the sulfides:
- CdS: Yellow
- PbS: Black
- ZnS: White
- SnS: Brown

4. **Conclusion**: From the analysis, we can conclude that the sulfide that is white is **ZnS (Zinc Sulfide)**.

### Final Answer:
The white sulfide among the options provided is **ZnS**.

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