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Chemical Effects of Electric Current — Science STD 8 — Question

Gujarat BoardEnglish MediumSTD 8ScienceChemical Effects of Electric Current1 Mark
MCQ
Which of the following can be electroplated with chromium?
  • A
    Bakelite and graphite.
  • ✓
    Graphite and steel.
  • C
    Steel.
  • D
    Graphite and teflon.
✓

Answer

Correct option: B.
Graphite and steel.
The electroplating of chromium on metal object is called chrome. This procedure is used to reduce corrosion and for decorative purpose. Trivalent chromium plating is done on graphite to avoid oxidation reaction taking place in it. Here, chromium chloride or chromium sulphate is used for electroplating. This is majorly used to make the product thicker. Chromium is plated on steel for decorative purpose and make the metal corrosive resistant. It is used in car parts and utensils. Bakelite and teflon both are special type of plastic.

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