Answers

2016-03-12T18:49:28+05:30
They are not used commonly..they are used only in specific processes. Such as refining of aluminium.CO2 is released in this process.They are reactive electrodes.
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2016-03-13T00:17:39+05:30
Carbon compounds like graphite is good conductor of electricity due to the delocalised pi electron system hence used in electrolytic cells
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