22) Which is the name of cadmium plating solution composition for blue passivation?
Answer is:
Sodium di chromate and sulphuric acid
Related Zinc plating – II MCQ with Answers
Answer is:
1% volume of hydrochloric acid solution
Answer is:
Tin less reactive than iron
Answer is:
Acid sulphate
Explanation:
More than 95% of tin or tin-lead plating is done from acidic electrolytes, while other alloys with copper, zinc, etc are done from alkaline and cyanide electrolytes. For pure tin deposition, sulphuric acid based baths are the most common ones due to its low cost.
Acid sulphate is used as electrolyte for tin plating.