Fundamentholfundamenthol
JEE Main2019Chemistry
Q.

The hardness of a water sample (in terms of equivalents of CaCO3 ) containing 10–3 M CaSO4 is (molar mass of CaSO4 = 136 g mol–1) 

  1. A

    10 ppm 

  2. B

    100 ppm 

  3. C

    90 ppm

  4. D

    50 ppm 

Solution

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