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Question
The cathode in the central compartment of Castner Kellner cell used for the manufacture of NaOH is:
The cathode in the central compartment of Castner Kellner cell used for the manufacture of NaOH is:
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Solution
The correct option is C Mercury
The apparatus shown is divided into two types of cells separated by slate walls. The first type, shown on the right and left of the diagram, uses an electrolyte of sodium chloride solution, a graphite anode (A), and a mercury cathode (M). The other type of cell, shown in the center of the diagram, uses an electrolyte of sodium hydroxide solution, a mercury cathode (M), and an iron anode (D).
The apparatus shown is divided into two types of cells separated by slate walls. The first type, shown on the right and left of the diagram, uses an electrolyte of sodium chloride solution, a graphite anode (A), and a mercury cathode (M). The other type of cell, shown in the center of the diagram, uses an electrolyte of sodium hydroxide solution, a mercury cathode (M), and an iron anode (D).
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