ZINC PLATING 2 - Practice Mode

1) Which is the solution used for cadmium stripping?

Cold 10% solution of ammonium nitrate Hot 10% solution of ammonium nitrate Cold 20% solution of ammonium nitrate Hot 20% solution of ammonium nitrate

Correct Answer: Cold 10% solution of ammonium nitrate

2) Which is the name of cadmium plating solution composition for blue passivation?

Sodium di chromate and sulphuric acid Sodium dichromate and Ammonium Sulphuric acid and Ammonium Nitric acid and Ammonium

Correct Answer: Sodium di chromate and sulphuric acid

3) Which solution is used to test for porosity of cadmium and zinc coating?

1% volume of hydrochloric acid solution 2% volume of hydrochloric acid solution 3% volume of hydrochloric acid solution 4% volume of hydrochloric acid solution

Correct Answer: 1% volume of hydrochloric acid solution

4) Which is the reason tin cans are used to store the food than Iron?

Tin gives a shiny appearance To make the vessel cheap Tin less reactive than iron To make vessel lighter

Correct Answer: Tin less reactive than iron

5) Which electrolyte is used for tin plating?

Sulphite oil Acid sulphate Hydrogen sulphate Sodium chloride

Correct Answer: Acid sulphate

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