Hardness of water is directly measured by titrated with ethylene-di-amine-tetracetic acid (EDTA) using

Hardness of water is directly measured by titrated with ethylene-di-am

1.	Hardness of water is directly measured by titrated with ethylene-di-amine-tetracetic acid (EDTA) using
A.	feriochrome black T indicator
B.	ferroin indicator
C.	methyl orange indicator
D.	phenolphthalein indicator
Answer» E.

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Hardness of water is directly measured by titrated with ethylene-di-amine-tetracetic acid (EDTA) using

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