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Sodium metal can be extracted by either ...

Sodium metal can be extracted by either Castner's Process or Down's process
Castner's process.
Electrolyte `to` fused `NaOH`
Cathode and anode are made up of a steel rod and `Ni` cylinder respectively the reaction takes place as follows :
At cathode `Na^(+)+e^(-)toNa`
At anode `OH^(-)to(1)/(2)H_(2)O+(1)/(4)O_(2)uarr+e^(-)`
Down's process :
Electrolyte `to` fused `NaCl` and `CaCl_(2)`
Cathode and anode are ring shaped iron metal and graphite respectively. The reaction takes place as follows :
`Na^(+)+e^(-)toNa`
`Cl^(-)to(1)/(2)Cl_(2)uarr+e^(-)`
In Castner's process some sodium metal us lost due to

A

Reaction with dissolved `O_(2)` in molten `NaOH`

B

It's high reactivity, it attacks other substances present in the system

C

High temperature at which some of it vapourizes

D

All of these

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Sodium metal can be extracted by either Castner's Process or Down's process Castner's process. Electrolyte to fused NaOH Cathode and anode are made up of a steel rod and Ni cylinder respectively the reaction takes place as follows : At cathode Na^(+)+e^(-)toNa At anode OH^(-)to(1)/(2)H_(2)O+(1)/(4)O_(2)uarr+e^(-) Down's process : Electrolyte to fused NaCl and CaCl_(2) Cathode and anode are ring shaped iron metal and graphite respectively. The reaction takes place as follows : Na^(+)+e^(-)toNa Cl^(-)to(1)/(2)Cl_(2)uarr+e^(-) CaCl_(2) is used along with NaCl due to

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