A substance ‘X’ is used in white-washing. When mixing with water, 'X' it converted into 'Y' and it is rubbed on wall for white-washing. after some time 'Y' convert into substance 'Z' by reacting CO2 gas. Identify ‘X’ 'Y' and 'Z'.
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The chemical substance X which is used for whitewashing is Calcium oxide also known as quicklime or burnt lime or lime. The formula of substance X is CaO.
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