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Which of the following ions is not found in excess in acidic soils?

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Which of the following ions is not found in excess in acidic soils?

(a) Al

(b) Fe

(c) Mg

(d) Cu

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Right choice is (c) Mg

Explanation: Acidic soils are generally characterized by low pH, hence, certain dissolved ions are found in these soils in excessive amounts like Al, Fe, Cu whereas the soil is deficient in Mg ions and hence, is not found in excess in acidic soils.

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