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Electroplater
PCB MAKING AND CHEMICAL ETCHING PROCESS
Set 9
Set 9
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Q5532
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Which is the chemical formula of phosphoric acid?
A
P<sub>3</sub> HO4
B
H<sub>3</sub> PO4
C
O<sub>3</sub> HP4
D
P4 HO<sub>3</sub>
Q5533
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What is phosphating process?
A
Convert to steel surface area
B
Plating on surface
C
Coating on surface
D
Masking of surface
Q5534
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Which acid solution is used for phosphating?
A
Phosphoric acid solution
B
Hydrofloric acid solution
C
Hydrochloric solution
D
Chromic acid solution
Q5535
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Which process is used before powder coating?
A
Dyeing
B
Painting
C
Phosphating
D
Dipping
Q5536
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What is the temperature of powder coated article?
A
200 Degree Centigrade
B
100 Degree Centigrade
C
400 Degree Centigrade
D
300 Degree Centigrade
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