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(ix) Slag coming out at the bottom of a ...

(ix) Slag coming out at the bottom of a blast furance during extraction of iron form its ore is used in making.

A

Fertiliders

B

Roads

C

Plastics

D

Glass moulds

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the Context**: The question pertains to the byproduct known as slag that is produced during the extraction of iron from its ore in a blast furnace. 2. **Identifying the Ore**: The primary ore of iron used in the extraction process is hematite, which has the chemical formula Fe₂O₃. 3. **Formation of Slag**: During the extraction of iron, impurities such as silica (SiO₂) combine with flux (like limestone, CaCO₃) to form slag. The chemical formula for the slag produced is CaSiO₃ (calcium silicate). 4. **Uses of Slag**: The slag produced in the blast furnace has various applications, particularly in construction. One of the significant uses of slag is in the production of blended cement. 5. **Final Application**: Specifically, slag is used in making concrete and is often utilized in the construction of roads and bridges. Therefore, among the options provided, the correct answer is that slag is used in making roads. **Final Answer**: Slag coming out at the bottom of a blast furnace during the extraction of iron from its ore is used in making roads. ---
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