Reduction for which ore should be partially roasted is:

Smelting

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Solution

The correct option is A Smelting
Reduction for which ore should be partially roasted is smelting. Smelting used heat and a chemical reducing agent (such as coke) to decompose the ore leaving the metal base behind. A reducing environment (often provided by $C O$ , made by incomplete combustion in an air-starred furnace, pulls the oxygen from the ore.

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