VPH-0058
QUESTION
The chemical used for regeneration of zeolite?
OPTIONS
(A) Na₂SO₄
(B) NaCl
(C) Na₂CO₃
(D) NaHCO₃
ANSWER
(B) NaCl
EXPLANATION
Sodium chloride is used to regenerate zeolite in ion-exchange water softeners by replacing accumulated calcium and magnesium ions. The listed sodium sulfate, carbonate, and bicarbonate are not the standard regenerant.
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