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JEE Main20199 Jan 2019Evening ShiftChemistryHydrogenActual

The temporary hardness of water is due to:

Options

  1. ANa 2 SO 4
  2. BNaCl
  3. CCaCl 2
  4. DCa HCO 3 2

Correct answer

D. Ca HCO 3 2

Step-by-step solution

Cl - ions are the cause of permanent hardness & HCO 3 - ions are the cause of temporary Hardness.

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