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

If 1000g of a water sample contains 10g of $CaCO_3$ then the hardness of that water sample is

$\begin{array}{1 1}(a)\;100ppm\\(b)\;500ppm\\(c)\;10000ppm\\(d)\;20000ppm\end{array}$

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