Select the correct statement(s)

Options

A. Calamine and siderite and carbonates
B. Argentite and cuprites are oxides.
C. Zinc blende and iron-pyrite are sulphides
D. Malachite and azurite are ores of Cu.

Explanation

To solve the question of selecting the correct statements, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Evaluate Statement 1: "Calamine and sidrite are carbonates."**
- Calamine has the chemical formula ZnCO3, which is indeed a carbonate.
- Sidrite has the chemical formula FeCO3, which is also a carbonate.
- **Conclusion**: This statement is correct.

2. **Evaluate Statement 2: "Argentite and cuprites are oxides."**
- Argentite has the chemical formula Ag2S, which is a sulfide, not an oxide.
- Cuprite has the formula Cu2O, which is indeed an oxide.
- **Conclusion**: Since argentite is not an oxide, this statement is incorrect.

3. **Evaluate Statement 3: "Zinc blend and iron pyrite are sulfides."**
- Zinc blend has the formula ZnS, which is a sulfide.
- Iron pyrite has the formula FeS2, which is also a sulfide.
- **Conclusion**: This statement is correct.

4. **Evaluate Statement 4: "Malachite and azurite are ores of copper."**
- Malachite has the formula CuCO3·Cu(OH)2, which is an ore of copper.
- Azurite has the formula Cu3(CO3)2(OH)2, which is also an ore of copper.
- **Conclusion**: This statement is correct.

### Final Conclusion:
The correct statements are:
- Statement 1: Correct
- Statement 2: Incorrect
- Statement 3: Correct
- Statement 4: Correct

Thus, the correct statements are the 1st, 3rd, and 4th.

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