TIN PLATING - Quiz

1) Which is the combination for zinc cyanide bath?

Sodium zincate and zinc cyanide Zinc Cyanide and sulphate Sodium carbonate and sulphate Sodium cyanide potassium cyanide

2) Which is the temperature range of cyanide zinc solution for operation?

20 to 30 Degree Centigrade 25 to 40 Degree Centigrade 50 to 60 Degree Centigrade 60 to 70 Degree Centigrade

3) Which process is used for colouring the job after zinc plating?

Bright Blue passivation Activating Coating Painting

4) Which is the defect if zinc depositing rough and dark?

Deficiency of cyanide and caustic soda Voltage fluctuation Size of Anode more Long time

5) Which is the defect if presence of blisters in the plating surface?

Excessive current Long time Excessive voltage Solution out of balance