Sodium Chloride solution

Slightly acidified water

Copper Sulphate solution

Distilled water

Deflection in the ammeter

Copper colour forming on negative electrode

Evolution of gas at positive electrode

Copper Sulphate solution turns dark blue

Using the metal that is plated as the positive electrode

Using the ornament that is plated as the negative electrode

Electrolysing a solution of a salt of the metal that is electroplated.

Elecrtrolyte used should be concentrated salt solution

It is not an ionic compound

There is no mobile ions

It is not a colourd salt

It is easily soluble in water

Gold Cyanide

Silver Nitrate

Copper sulphate

Slightly acidified water.

Solid sodium chloride (NaCl) is an electrical conductor

Fused sodium chloride (NaCl) does not conduct electricity

An aqueous solution of sodium chloride (NaCl) conducts electricity

Solid sodium chloride (NaCl) consists of mobile ions.

To make a high quality electroplating, the concentration of the electrolyte must be high

To electroplate a copper ring with silver, the copper ring must be kept as the positive electrode,

To electroplate a copper ring with silver, a copper salt must be taken as the electrolyte

When electroplating a copper ring with silver, the positive electrode erodes gradually

A silver rod, a very dilute solution of a silver salt

A gold rod, a very dilute solution of a silver salt

A gold rod, a very dilute solution of a gold salt

A gold rod, a concentrated solution of a gold salt