Copper glance is...........type of ore-

Options

A. Carbonate
B. Sulphides
C. Oxide
D. Sulphate

Explanation

To determine the type of ore that copper glance is, we can follow these steps:

### Step 1: Identify the Chemical Formula
Copper glance is known to have the chemical formula Cu2S. This indicates that it contains copper (Cu) and sulfur (S).

### Step 2: Understand Types of Ores
Ores can be categorized based on their chemical composition. The common types of ores include:
- Carbonate ores (contain CO3)
- Oxide ores (contain O)
- Sulfate ores (contain SO4)
- Sulfide ores (contain S)

### Step 3: Analyze the Composition of Copper Glance
From the formula Cu2S, we see that copper glance contains sulfur but does not contain oxygen, carbonate, or sulfate groups.

### Step 4: Eliminate Incorrect Options
- **Carbonate ore**: Contains CO3, which is not present in Cu2S.
- **Oxide ore**: Contains O, which is also not present in Cu2S.
- **Sulfate ore**: Contains SO4, which is not present in Cu2S.

### Step 5: Identify the Correct Option
Since copper glance contains sulfur (S) and does not contain any of the other groups mentioned, it is classified as a **sulfide ore**.

### Conclusion
Therefore, the correct answer is that copper glance is a **sulfide ore**.

---