Question

OR
A metal 'P' acquires a green colour coating on its surface when exposed to air.
(a) Identify the metal 'P' and name the process responsible for this change.
(b) What does the metal 'P' react with to produce the green coating?
(c) Give the chemical name of the green coating formed on the metal.
(d) List any one method to prevent the formation of the green coating on the
metal.​

Answer 1

(a) Copper. The process responsible is corrosion.

(b) Metal p reacts with the oxygen and water present in the atmosphere.

(c) the chemical name of green coating is copper oxide.

(d) It can be prevented by greasing the metal or by painting it.

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