On adding dilute "Copper Oxide"a blue-green coloured solution is formed.i) What is the "blue -green" colour of the solution due to? ii) Write the chemical equation involved in the reaction . iii) Why is " Copper Oxide" considered as a " base"?

On adding dilute "Copper Oxide"a blue-green coloured solution is forme

1.	On adding dilute "Copper Oxide"a blue-green coloured solution is formed.i) What is the "blue -green" colour of the solution due to? ii) Write the chemical equation involved in the reaction . iii) Why is " Copper Oxide" considered as a " base"?
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