A metal X acquires a green colour coating on its surface on exposure to air. (i) Identify the metal X and name the process responsible for this change. (ii) Name and write chemical formula of the green coating formed on the metal (iii) List two important methods to prevent the process.
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(I)the metal X is copper and the process responsible for this change is corrosion
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metal is copper. green coating is copper sulphate,
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