Pg 119 & 120

1. What kind of salt is sodium argentocyanide ?

• DOUBLE SALT
• COMPLEX SALT
• ACID SALT
• NORMAL SALT

2. During the electroplating of Nickel , What is the product at anode?

• NICKEL
• OXYGEN
• HYDROGEN
• NO PRODUCT

3. During silver plating of an article using potassium argentocyanide as an electrolyte, the anode material should be

• Cu
• Ag
• Pt
• Fe

4. Metallic ions that should be present in the electrolyte when an article made up of copper is to be electroplated with silver

• COPPER ION
• IRON ION
• SILVER ION
• PLATINUM ION

5.For the electron – refining of copper , State what is the cathode made up of?

• THICK BLOCK OF PURE COPPER
• THICK BLOCK OF IMPURE COPPER
• THIN SHEET OF PURE COPPER
• THIN SHEET OF IMPURE COPPER