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Which minerals and in what form are present in ground water?

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in Basic Civil Engineering by (111k points)
Which minerals and in what form are present in ground water?

(a) Fe & Mn in Ferrous and Manganous

(b) Fe & Cu in Ferric and Cupric

(c) Fe & Mn in Ferric and manganous

(d) Cu & Mn in Cuprous and manganous

This question was posed to me in final exam.

I'd like to ask this question from Wastewater Management in division Other Major Topics in Civil Engineering of Basic Civil Engineering

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Right option is (a) Fe & Mn in Ferrous and Manganous

The explanation is: Both these are present in their reduced forms. If the ground water has more than the permissible amounts (Fe less than or equal to 0.3mg/litre and Mn≤ 0.05mg/ltr) then it should be treated.

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