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Electroplater
GOLD PLATING
Set 3
Set 3
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Q5222
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Which is the combination for zinc cyanide bath?
A
Sodium zincate and zinc cyanide
B
Zinc Cyanide and sulphate
C
Sodium carbonate and sulphate
D
Sodium cyanide potassium cyanide
Q5223
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Which is the temperature range of cyanide zinc solution for operation?
A
20 to 30 Degree Centigrade
B
25 to 40 Degree Centigrade
C
50 to 60 Degree Centigrade
D
60 to 70 Degree Centigrade
Q5224
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Which process is used for colouring the job after zinc plating?
A
Bright Blue passivation
B
Activating
C
Coating
D
Painting
Q5225
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Which is the defect if zinc depositing rough and dark?
A
Deficiency of cyanide and caustic soda
B
Voltage fluctuation
C
Size of Anode more
D
Long time
Q5226
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Which is the defect if presence of blisters in the plating surface?
A
Excessive current
B
Long time
C
Excessive voltage
D
Solution out of balance
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