A) Castnefs process
B) Cyanide process
C) Down's process
D) Both and
Correct Answer: A
Solution :
In Castner? s process, fused caustic soda (or sodium hydroxide) is electrolysed to get Na. The reactions of the process are as follows \[NaOHN{{a}^{+}}+O{{H}^{-}}\] \[N{{a}^{+}}+{{e}^{-}}\xrightarrow[{}]{{}}Na\](At cathode) \[4O{{H}^{-}}\,\xrightarrow[{}]{{}}{{O}_{2}}+2{{H}_{2}}O+4{{e}^{-}}\](At anode)
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