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प्रश्न
Which of the following reactions is an example of autoreduction?
विकल्प
\[\ce{Fe3O4 + 4CO -> 3Fe + 4CO2}\]
\[\ce{Cu2O + C -> 2Cu + CO}\]
\[\ce{Cu^{2+} (aq) + Fe (s) -> Cu (s) + Fe^{2+} (aq)}\]
\[\ce{Cu2O + 1/2 Cu2S -> 3Cu + 1/2 SO2}\]
उत्तर
\[\ce{Cu2O + 1/2 Cu2S -> 3Cu + 1/2 SO2}\]
Explanation:
This reaction includes reduction of copper (I) oxide by copper (I) sulphide. In this process, copper is reduced by itself hence this process is known as autoreduction and the solidified copper so, obtained is known as blister copper.
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