Easy
Furnaces are lined with $CaO$ because
- AIt gives off oxygen on heating
- BIt gives strong light on heating
- CIt is refractory and basic
- DIt is not affected by acids
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For the electrolytic production of aluminium,$(i)$ the cathode and $(ii)$ the anode are made of
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View SolutionThe Hall-Heroult process is represented by which of the following reactions?
Predict conditions under which $Al$ might be expected to reduce $MgO$.
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View SolutionIn the process of leaching of gold by cyanide,what are the complexes $X$ and $Y$ respectively?
$4Au(s) + 8CN^-(aq) + 2H_2O(aq) + O_2(g) \to 4[Au(CN)_2]^-(aq) + 4OH^-(aq)$
$2[Au(CN)_2]^-(aq) + Zn(s) \to [Zn(CN)_4]^{2-}(aq) + 2Au(s)$
$X$ and $Y$ are:
$4Au(s) + 8CN^-(aq) + 2H_2O(aq) + O_2(g) \to 4[Au(CN)_2]^-(aq) + 4OH^-(aq)$
$2[Au(CN)_2]^-(aq) + Zn(s) \to [Zn(CN)_4]^{2-}(aq) + 2Au(s)$
$X$ and $Y$ are:
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