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Question
Extraction of metals from its ores contain the following stages such as calcination and :
Extraction of metals from its ores contain the following stages such as calcination and :
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Solution
The correct option is B Both (a) and (b)
(1) Roasting is a process in metallurgy in which a sulfide ore is heated in air. The process may convert a metal sulfide to a metal oxide or to free metal.
(2) Smelting is a process when a metal which is more reactive than copper needs to be extracted. For example, zinc is more reactive than copper so it has to be extracted by smelting.
Extraction of metals from its ores contains also the roasting and smelting like calcination.
Hence, option C is correct.
(1) Roasting is a process in metallurgy in which a sulfide ore is heated in air. The process may convert a metal sulfide to a metal oxide or to free metal.
(2) Smelting is a process when a metal which is more reactive than copper needs to be extracted. For example, zinc is more reactive than copper so it has to be extracted by smelting.
Hence, option C is correct.
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