Indicator used in the estimation of hard watera.none of themb.EBTc.EDTAd.Ammonia buffer
Question
Solution 1
The indicator used in the estimation of hard water is EDTA (Ethylenediaminetetraacetic acid). So, the correct answer is c. EDTA.
Here's a step-by-step explanation:
Hard water contains high mineral content, especially calcium and magnesium ions.
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