Question

MCQ : Temporary hardness is due to the presence of which compound in water?

  • Water
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Answer

Question

Temporary hardness is due to the presence of which compound in water?

  1. NaCl
  2. CaSO4
  3. NaNO3
  4. Ca(HCO3)2

Answer

Ca(HCO3)

Explanation

Temporary hardness in water is due to the presence of calcium bicarbonate (Ca(HCO3)2), which can form insoluble calcium carbonate when heated, causing scale buildup.

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