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प्रश्न
Manganese metal is extracted from manganese dioxide by a reduction process by making use of:
(a) carbon
(b) hydrogen
(c) electrolysis
(d) aluminium
उत्तर
(d) aluminium
There are some metals that cannot be satisfactorily reduced by carbon. In such cases, aluminium is used as reducing agent, e.g., manganese.
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संबंधित प्रश्न
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Give the equation for the reaction which takes place at the cathode.
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- Au
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