In which process, fused sodium hydroxide is electrolysed for extraction of sodium?

Options

A. Castner's process
B. cyanide process
C. Down process
D. All of these

Answer

a

Explanation

Castners process
`NaOHhArrNa^(+)+OH^(-)`
Cathode : `Na^(+) + e^(-) toNa`
Anode : `20H^(-) + H_(2)O+ 1//2 O_(2), +2e^(-)`