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Electroplater
COLOURING TECHNIQUES
Set 5
Set 5
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Q5027
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Which is the name of chemical used for etching in economical way?
A
Alkaline ammonia
B
Sulpuric - Hydrogen peroxide
C
Cupric chloride
D
Ferric chloride
Q5028
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Which is the name of process that removing of copper present in the unmasked portion in PCB?
A
Etching
B
Desoldering
C
Filing
D
Grinding
Q5029
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Which is the reason that PCB taken out of the solution is to be cleaned by fresh water?
A
To clean surface
B
To stop further etching
C
To check condition of copper
D
To remove the paints
Q5030
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Which is the composition of solution Ferric chloride?
A
Iron and Flouride
B
Iron and Chromium
C
Iron and Cadmium
D
Iron and Chlorine
Q5031
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What is the chemical formula of aluminium?
A
A
B
AM
C
Al
D
AN
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