Copper utensils slowly lose their shiny brown surface

Acids, Bases and Salts (10)

Copper utensils slowly lose their shiny brown surface and gain a green coat on prolonged exposure to atmospheric air. This is due to the formation of a coating of

  1. Copper sulphate
  2. Copper carbonate
  3. Cupric oxide
  4. Cuprous oxide

Answer

B - copper carbonate

  • Exam Year: 2020 Compartment