JEE Main Chemistry question

Chemistry General Principles and Processes of Isolation of Elements (Metallurgy)JEE Main

Not in JEE Main or NEET syllabus

Purpose of smelting of an ore is

(A)To oxidize it
(B)To remove vaporisation impurities
(C)To reduce itCorrect
(D)To obtain an alloy

Answer: (C)

Solution

Smelting is the reduction of the roasted/calcined metal oxide to the free metal using a reducing agent such as coke or CO, e.g. Fe_2O_3+3CO\to 2Fe+3CO_2. It is not an oxidation step

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Question ID VK-145235