The reagent commonly used to determine hardness of water titrimetrically is

The reagent commonly used to determine hardness of water titrimetrically is

  1. A

    Oxalic acid

  2. B

    Disodium salt of EDTA

  3. C

    Sodium citrate

  4. D

    Sodium thiosulphate

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    Solution:

    It forms calcium and magnesium complex with EDTA salt.

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