Multiple Choice Question (MCQ)
Question: Which is the name of cadmium plating solution composition for blue passivation?
A.
Sodium di chromate and sulphuric acid
B.
Sodium dichromate and Ammonium
C.
Sulphuric acid and Ammonium
D.
Nitric acid and Ammonium
Correct Answer: Sodium di chromate and sulphuric acid