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Question
Give a reason for the following:
A crusty ‘boiler scale’ is formed in boilers, when hard water is used.
Solution
A crusty ‘boiler scale’ is formed in boilers, when hard water is used because insoluble CaCO3 or MgCO3 is formed in large scale which gets deposited as crusty ‘boiler scale’. Its formed when bicarbonates of calcium or magnesium are converted into carbonates.
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