The most common constituents of alkalinity in natural water are measured by titrating the water sample with 0.02 N H2SO4 using
(a) Eriochrome Black T and Ferroin indicators
(b) Ferroin and Phenolphthalein indicators
(c) Phenolphthalein and Methyl Orange indicators
(d) Methyl Orange and Ericochrome Black T indicators

1 Answer

Answer :

(c) Phenolphthalein and Methyl Orange indicators

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