Anodising MCQ with Answers

Anodising MCQ with Answers

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

Answer is:

Ferric chloride

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

Answer is:

Etching

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

Answer is:

To stop further etching

24) Which is the composition of solution Ferric chloride?

Answer is:

Iron and Chlorine

25) What is the chemical formula of aluminium?

Answer is:

Al

Explanation:

Chemical formula of aluminium is "Al".

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