Match the ores of List - I with their composition in List - II
`{:(,"List - I",,"List - II"),((P),"Malachite",(1),"Sulphide of copper"),((Q),"Azurite",(2),"Sulphide of iron"),((R),"Chalcopyrites",(3),"Dirty brown"),((S),"Cuprite",(4),"Ore containing carbonate of copper"):}`

Options

A. `{:(P,Q,R,S),(4,1,2,3):}`
B. `{:(P,Q,R,S),(4,4,"1,2",3):}`
C. `{:(P,Q,R,S),(2,3,4,1):}`
D. `{:(P,Q,R,S),(3,4,2,1):}`

Answer

To solve the problem of matching the ores from List - I with their compositions in List - II, we will analyze each ore and identify its chemical composition.

### Step-by-Step Solution:

1. **Identify Malachite:**
- Malachite is known to be a copper carbonate hydroxide.
- Its chemical formula is \( \text{Cu}_2\text{CO}_3\text{(OH)}_2 \).
- Therefore, it matches with the description of "Ore containing carbonate of copper."
- **Match:** P (Malachite) → 4

2. **Identify Azurite:**
- Azurite is also a copper carbonate hydroxide.
- Its chemical formula is \( \text{Cu}_3\text{CO}_3\text{(OH)}_2 \).
- Similar to Malachite, it matches with "Ore containing carbonate of copper."
- **Match:** Q (Azurite) → 4

3. **Identify Chalcopyrite:**
- Chalcopyrite is a mineral that contains both copper and iron along with sulfur.
- Its chemical formula is \( \text{CuFeS}_2 \).
- This indicates that it is a sulphide of copper and also a sulphide of iron.
- **Match:** R (Chalcopyrite) → 1 and 2

4. **Identify Cuprite:**
- Cuprite is a copper oxide.
- Its chemical formula is \( \text{Cu}_2\text{O} \).
- This mineral is known to be "dirty brown" in color.
- **Match:** S (Cuprite) → 3

### Final Matches:
- P (Malachite) → 4 (Ore containing carbonate of copper)
- Q (Azurite) → 4 (Ore containing carbonate of copper)
- R (Chalcopyrite) → 1 (Sulphide of copper) and 2 (Sulphide of iron)
- S (Cuprite) → 3 (Dirty brown)

### Summary of Matches:
- P → 4
- Q → 4
- R → 1, 2
- S → 3