Which statement is incorrect among the following ?

Options

A. Calamine and siderite are carbonates
B. Argentite and cuprite are oxides
C. Zinc blende and pyrites are sulphides
D. Malachite and azurite are ores of copper

Answer

To determine which statement is incorrect among the given options, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement 1: Calamine and Siderite are Carbonates.**
- **Analysis**:
- Calamine is known as Zinc Carbonate (ZnCO₃).
- Siderite is Iron Carbonate (FeCO₃).
- **Conclusion**: Both are indeed carbonates. This statement is **correct**.

2. **Statement 2: Argentite and Cuprite are Oxides.**
- **Analysis**:
- Argentite is actually Silver Sulfide (Ag₂S), not an oxide.
- Cuprite is Copper(I) Oxide (Cu₂O).
- **Conclusion**: Since Argentite is a sulfide and not an oxide, this statement is **incorrect**.

3. **Statement 3: Zinc Blend and Pyrite are Sulfides.**
- **Analysis**:
- Zinc Blend is also known as Zinc Sulfide (ZnS).
- Pyrite is Iron Sulfide (FeS₂).
- **Conclusion**: Both are sulfides. This statement is **correct**.

4. **Statement 4: Malachite and Azurite are Ores of Copper.**
- **Analysis**:
- Malachite is a copper carbonate hydroxide (Cu₂CO₃(OH)₂).
- Azurite is a copper carbonate (Cu₃(CO₃)₂(OH)₂).
- **Conclusion**: Both are indeed ores of copper. This statement is **correct**.

### Final Conclusion:
The incorrect statement among the options is **Statement 2: Argentite and Cuprite are Oxides**.

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