HARD CHROMIUM PLATING - Quiz

1) What are the chemical contains in electrolyte used for dull nickel plating?

Nickel chloride, Boric acid and Ammonium sulphate Boric acid, Nickel sulphate and Ammonium chloride Dilute sulphuric acid, Hydro chloric acid and Boric acid Nickel sulphate, Sulphuric acid and Hydrochloride

2) What is the range of pH value is to be maintained for nickel plating solution?

2.5 to 3.0 3.2 to 4.2 3.6 to 4.2 4.5 to 5.0

3) Which metal is used to remove the organic impurities from nickel plating solution?

Silver Carbon Nichrome Chromium

4) What is the name of the defect occurs due to excessive current density?

Imperfect adhesion Rough and dark deposit Black (or) dark plating Pitting of deposit

5) Which metal, the nickel deposit can be removed by electrolytic process?

Zinc base alloys Copper base alloys Chromium base alloys Silver base alloys