Question

Which of the following process is used in the preparation of sodium?

• A. Castner's process
• B. Down's process
• C. Solvay's process
• D. None of these

Answer 1

Answer: (A), (B)

The correct options are
A Castner's process
B Down's process

a) Electrolysis of fused NaOH is carried out at ${330}^{\circ }C$ to obtain sodium

b) Electrolysis of fused NaCl containing calcium chloride and potassium fluoride at about ${600}^{\circ }C$, gives sodium.

c) Solvay's process is used in the preparation of sodium carbonate.