Statement-1:Silica is added as a flux in reverberatory furnace, in the extraction of copper from copper pyrites.
Statement-2:Silica acts as basic flux.

Options

A. Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1
B. Statement-1 is True, Statement-2 is True, Statement-2 is NOT
a correct explanation for Statement-1
C. Statement-1 is True, Statement-2 is False.
D. Statement-1 is False, Statement-2 is True.

Explanation

To solve the question, we need to analyze both statements provided regarding the role of silica in the extraction of copper from copper pyrites.

**Step 1: Analyze Statement 1**
- Statement 1 claims that silica is added as a flux in the reverberatory furnace during the extraction of copper from copper pyrites.
- In the extraction process, copper is obtained from copper pyrites (CuFeS2) through roasting and smelting. Silica (SiO2) is indeed used as a flux to combine with impurities and form slag.
- Therefore, Statement 1 is **True**.

**Step 2: Analyze Statement 2**
- Statement 2 states that silica acts as a basic flux.
- Silica (SiO2) is actually classified as an acidic flux. It is used to remove basic impurities such as metal oxides (e.g., CaO) during the smelting process.
- Basic fluxes, like CaCO3 or MgCO3, are used to remove acidic impurities. Since silica does the opposite, Statement 2 is **False**.

**Final Conclusion**
- Statement 1 is True, and Statement 2 is False.

Thus, the correct answer is:
- Statement 1: True
- Statement 2: False