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Electroplater
COPPER PLATING
Set 8
Set 8
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Q5164
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What are the chemical contains in electrolyte used for dull nickel plating?
A
Nickel chloride, Boric acid and Ammonium sulphate
B
Boric acid, Nickel sulphate and Ammonium chloride
C
Dilute sulphuric acid, Hydro chloric acid and Boric acid
D
Nickel sulphate, Sulphuric acid and Hydrochloride
Q5165
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What is the range of pH value is to be maintained for nickel plating solution?
A
2.5 to 3.0
B
3.2 to 4.2
C
3.6 to 4.2
D
4.5 to 5.0
Q5166
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Which metal is used to remove the organic impurities from nickel plating solution?
A
Silver
B
Carbon
C
Nichrome
D
Chromium
Q5167
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What is the name of the defect occurs due to excessive current density?
A
Imperfect adhesion
B
Rough and dark deposit
C
Black (or) dark plating
D
Pitting of deposit
Q5168
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Which metal, the nickel deposit can be removed by electrolytic process?
A
Zinc base alloys
B
Copper base alloys
C
Chromium base alloys
D
Silver base alloys
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