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Electroplater
GOLD PLATING
Set 5
Set 5
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Q5232
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Which is the solution used for cadmium stripping?
A
Cold 10% solution of ammonium nitrate
B
Hot 10% solution of ammonium nitrate
C
Cold 20% solution of ammonium nitrate
D
Hot 20% solution of ammonium nitrate
Q5233
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Which is the name of cadmium plating solution composition for blue passivation?
A
Sodium di chromate and sulphuric acid
B
Sodium dichromate and Ammonium
C
Sulphuric acid and Ammonium
D
Nitric acid and Ammonium
Q5234
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Which solution is used to test for porosity of cadmium and zinc coating?
A
1% volume of hydrochloric acid solution
B
2% volume of hydrochloric acid solution
C
3% volume of hydrochloric acid solution
D
4% volume of hydrochloric acid solution
Q5235
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Which is the reason tin cans are used to store the food than Iron?
A
Tin gives a shiny appearance
B
To make the vessel cheap
C
Tin less reactive than iron
D
To make vessel lighter
Q5236
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Which electrolyte is used for tin plating?
A
Sulphite oil
B
Acid sulphate
C
Hydrogen sulphate
D
Sodium chloride
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