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Q.

The correct statements regarding Ellingham's diagram are

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a

below 710oC, CO is a more effective reducing agent than carbon

b

it gives a clear explanation of need for the conversion of metal sulphide to corresponding oxides before reduction

c

metal oxides have less negative value of Goas compared to CO2 hence, oxidation of metal sulphides to oxides is not favourable

d

a metal can reduce the oxide of only those metal which lies above it in the Ellingham diagram

answer is A.

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Detailed Solution

Goof metal oxides is lower than that of CO2 hence, oxidation of metal sulphide to metal oxide is favourable.

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