CONVERSION COATING PROCESS - Quiz

1) Which is the name of chemical used for etching in economical way?

Alkaline ammonia Sulpuric - Hydrogen peroxide Cupric chloride Ferric chloride

2) Which is the name of process that removing of copper present in the unmasked portion in PCB?

Etching Desoldering Filing Grinding

3) Which is the reason that PCB taken out of the solution is to be cleaned by fresh water?

To clean surface To stop further etching To check condition of copper To remove the paints

4) Which is the composition of solution Ferric chloride?

Iron and Flouride Iron and Chromium Iron and Cadmium Iron and Chlorine

5) What is the chemical formula of aluminium?

A AM Al AN