Which is incorrect statements among the following?

Options

A. Zinc blends and Galena are sulphides
B. Argentite and cuprite are oxides
C. Calamine and siderite are carbonates
D. Malachite and azuite are ores of copper

Answer

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

### Step 1: Analyze the First Statement
**Statement:** Zinc-Blende and Galena are sulfides.

- **Zinc-Blende (ZnS):** This is indeed a sulfide mineral as it contains sulfur.
- **Galena (PbS):** This is also a sulfide mineral as it contains sulfur.

**Conclusion:** This statement is correct.

### Step 2: Analyze the Second Statement
**Statement:** Argentite and Cuprite are oxides.

- **Argentite (Ag2S):** This is actually a sulfide, not an oxide.
- **Cuprite (Cu2O):** This is indeed an oxide.

**Conclusion:** This statement is incorrect because Argentite is a sulfide, not an oxide.

### Step 3: Analyze the Third Statement
**Statement:** Calamine and Ciderite are carbonates.

- **Calamine (ZnCO3):** This is a carbonate mineral of zinc.
- **Ciderite (FeCO3):** This is a carbonate mineral of iron.

**Conclusion:** This statement is correct.

### Step 4: Analyze the Fourth Statement
**Statement:** Malachite and Azurite are ores of copper.

- **Malachite (Cu2CO3(OH)2):** This is a carbonate mineral and is an ore of copper.
- **Azurite (Cu3(CO3)2(OH)2):** This is also a carbonate mineral and is an ore of copper.

**Conclusion:** This statement is correct.

### Final Conclusion
Among the given statements, the second statement is incorrect. Therefore, the correct option for this question is **option B**.

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