Sarthaks Test
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In the metallurgy of aluminium ________________.

(i) Al3+ is oxidised to Al (s).

(ii) graphide anode is oxidised to carbon monoxide and carbon dioxide.

(iii) oxidation state of oxygen changes in the reaction at anode.

(iv) oxidation state of oxygen changes in the overall reaction involved in the process.

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(ii) graphide anode is oxidised to carbon monoxide and carbon dioxide.

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