Question

Technological civilization is based on structural materials, particularly iron, which is extracted from its ores by:

• A. heating in a tank with charcoal
• B. smelting in a blast furnace with coke
• C. melting in a huge vessel with clay
• D. heating in a blast of carbon monoxide

Answer 1

Answer: (B)

smelting in a blast furnace with coke

Solution:- (B) smelting in a blast furnace with coke

Iron is extracted from iron ore in a huge container called a blast furnace. The common ore of iron is iron oxide, and it can be reduced to iron by heating it with carbon in the form of coke. Coke is produced by heating coal in the absence of air.

$\underset{\left(\text{iron ore}\right)}{{Fe}_2{O}_3}+\underset{\left(\text{Coke}\right)}{CO}\stackrel{Reduction}{\to }\underset{\left(\text{Iron}\right)}{Fe}+C{O}_2\uparrow$