Question

During the extraction of metals of low and medium reactivity from their respective sulphide ores. They first heated in the presence of -----"x"-----. This is used as it is more efficient
method to extract
metals.Identify"X"
A) Carbon
B) Oxygen
C) Carbon monoxide
D) All of these​

Answer 1

Answer:

B) Oxygen

Explanation:

Calcination and Roasting are the processes where ore is strongly heated in a supply of air (O2) to convert into its corresponding metal oxide.

Answer 2

Answer:

Oxygen

As oxygen is very important for burning

Explanation:

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