A Metal X exists in two types of ores in Earth’s crust which are A and B. A is a sulphide ore while B is a carbonate ore. What processes can be used to convert these ores into their respective metal oxides?

B is converted into metal oxide by roasting.

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A is converted into metal oxide by roasting.

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B is converted into metal oxide by calcination.

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A is converted into metal oxide by calcination.

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Solution

The correct option is C B is converted into metal oxide by calcination.
A is a sulphide ore. Sulphide ores are heated in the excess of air to convert them into oxides. This process is known as roasting.

So, A is converted into metal oxide by roasting.

B is a carbonate ore. Carbonate ores are heated in a limited supply of air to convert them into oxides. This process is known as calcination.

The correct options are (a) and (d).

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Similar questions

A sulphide ore is converted into metal oxide by the process of :
(a) Carbonation (b) roasting (c) calcination (d) anodising

Give the reason for the following:
Carbonate and sulphide ores are usually converted into oxides during the process of extraction of metals.

Which metal occurs as:

(a) A sulphide, (b) a halide,

Also gives the names of their respective ores.

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