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"Displacement reactions also play a key role in extracting metals in the middle of the reactivity series." Justify this statement with two examples.
Why can metals high up in the reactivity series not be obtained by reduction of their oxides by carbon ?
Assertion (A) : Carbon reduces the oxides of Sodium and Magnesium. Reason (R) : Sodium and Magnesium have more affinity for Oxygen than Carbon.
Assertion (A) : Metals in the middle of activity series are found in nature as sulphides or carbonates. Reason (R) : The sulphide ores are calcinated whereas carbonate ores are roasted to extract metals from them.
(a) "Displacement reactions also play a key role in extracting metals in the middle of the reactivity series." Justify this statement with two examples. (b) Why can metals high up in the reactivity series not be obtained by reduction of their oxides by carbon ?
What chemical process is used for obtaining a metal from its oxide?
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