Question

Which one of the following methods is used to manufacture sodium hydroxide?

• A. Leblanc's process
• B. Castner-Kellner cell
• C. Hasenclever's process
• D. Dutch process

Answer 1

The correct option is B Castner-Kellner cell

Castner-Kellner process is used for the manufacture of sodium hydroxide.

The Castner-Kellner process is a method of electrolysis on an aqueous alkali chloride solution (usually sodium chloride solution) to produce the corresponding alkali hydroxide.

$2NaCl\left(aq\right)+2H_{2}O\left(l\right)\to 2NaOH\left(aq\right)+H_2\left(g\right)+C{l}_2\left(g\right)$

Option B is correct.