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JEE MAIN 2020
09-01-20 S1
Question
The hardness of a water sample containing $10^{-3} \mathrm{M} \mathrm{MgSO}_4$ expressed as $\mathrm{CaCO}_3$ equivalents (in ppm) is $\_\_\_\_$ . (molar mass of $\mathrm{MgSO}_4$ is $120.37 \mathrm{~g} / \mathrm{mol}$ )
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Showing 18 questions
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