Hard Chromium Plating MCQ with Answers

Hard Chromium Plating MCQ with Answers

16) Which is the name of process that cleaning the metal in acid to remove corrosion products from the surface?

Answer is:

Pickling

17) Which is the equivalent weight of oxalic acid crystals?

Answer is:

63

18) Which acid is used for pickling and etching of metal?

Answer is:

Sulphuric acid

19) Which chemical is used for vapour degreasing?

Answer is:

Trichloroethylene

20) Which solution is used for alkaline cleaning?

Answer is:

Sodium carbonate

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