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Home  >>  JEEMAIN and AIPMT  >>  Chemistry  >>  Hydrogen
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Which of the following substance is not present in clear hard water

$\begin{array}{1 1}(a)\;Ca(HCO_3)_2\\(b)\;MgCl_2\\(c)\;CaSO_4\\(d)\;CaCO_3\end{array}$

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$CaCO_3$ insoluble in water.
Hence (d) is the correct answer.
answered Jan 23, 2014 by sreemathi.v
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