Q14 / 150 · MHT CET 2019 (Shift 2) · Chemistry

Limestone is used as a flux in the extraction of

Correct answer
A
Iron
B
Aluminium
C
Zinc
D
Copper

Solution

Limestone is used as a flux in the extraction of iron because it decomposes in hot furnace to form calcium oxide and carbon dioxide. The formed calcium oxide actually acts as flux and combined with silica to form fusible calcium silicate slag.

Hence, the correct answer is option: 'A'.

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