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Questions  >>  JEEMAIN and NEET  >>  Chemistry  >>  Hydrogen
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Q)

A sample of hard water contains 68ppm of $CaSO_4$,then the hardness of the same sample of water is

$\begin{array}{1 1}(a)\;68\\(b)\;100\\(c)\;200\\(d)\;50\end{array}$

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