Match the column -
Column-I Column-II
`{:((a)"Copper pyrites",,,,(P)CaCO_(3)),((b)"Azurite",,,,(Q)2CuCO_(3).Cu(OH)_(2)),((c )"Limestone",,,,(R)CuFeS_(2)),((d)"Sphalerrite",,,,(S)ZnS):}`

Options

A. (a)Q (b)R (c )S (d)P
B. (a)R (b)Q (c )P (d)S
C. (a)P (b)Q (c )R (d)S
D. (a)S (b)P (c )R (d)Q

Answer

To solve the matching question, we need to identify the correct chemical formula for each mineral or ore listed in Column-I. Let's go through each item step by step.

### Step-by-Step Solution:

1. **Identify the first item: Copper pyrites**
- Copper pyrites is a mineral from which copper can be extracted. The chemical formula for copper pyrites is **CuFeS₂**.
- **Match:** (a) Copper pyrites → (R) CuFeS₂

2. **Identify the second item: Azurite**
- Azurite is another copper ore. Its chemical formula is **2CuCO₃·Cu(OH)₂**.
- **Match:** (b) Azurite → (Q) 2CuCO₃·Cu(OH)₂

3. **Identify the third item: Limestone**
- Limestone is primarily composed of calcium carbonate. Its chemical formula is **CaCO₃**.
- **Match:** (c) Limestone → (P) CaCO₃

4. **Identify the fourth item: Sphalerite**
- Sphalerite is the ore of zinc, commonly known as zinc blend. Its chemical formula is **ZnS**.
- **Match:** (d) Sphalerite → (S) ZnS

### Final Matching:
- (a) Copper pyrites → (R) CuFeS₂
- (b) Azurite → (Q) 2CuCO₃·Cu(OH)₂
- (c) Limestone → (P) CaCO₃
- (d) Sphalerite → (S) ZnS

### Summary of Matches:
- A → R
- B → Q
- C → P
- D → S