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Electroplater
METAL TREATMENT CHEMICAL BATHS
Set 5
Set 5
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Q5406
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Which solution is used for pickling of ferrous metal?
A
Hcl acid solution
B
HF acid solution
C
HNO<sub>3</sub> acid solution
D
H<sub>2</sub> SO<sub>4</sub> acid solution
Q5407
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Which solution is used for pickling of non-ferrous metals?
A
H<sub>2</sub> SO<sub>4</sub> acid solution
B
HF acid solution
C
Nitric acid solution
D
Hcl acid solution
Q5408
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Which solution is used for pickling of magnesium alloys?
A
Hydrochloric acid solution
B
Hydrofluoric acid solution
C
Nitric acid solution
D
Dilute sulphuric acid
Q5409
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Which method is used to maintain nickel bath?
A
LOD metric method
B
Titrations
C
EDTA Method
D
Gravity method
Q5410
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Which material is used for masking of hard plating?
A
Stopping off lacquer
B
PVC tapes
C
Araldite
D
Glue
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