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    Question

    Which statement is true regarding the exchangeable

    acidity in the soil chemistry?
    A an exchangeable acidity is derived from exchangeable Na3+cations Correct Answer Incorrect Answer
    B exchangeable acidity is derived from exchangeable Ca3+cations Correct Answer Incorrect Answer
    C exchangeable acidity is derived from exchangeable AI3+ cations Correct Answer Incorrect Answer
    D exchangeable acidity is derived from exchangeable AI3+ anions Correct Answer Incorrect Answer

    Solution

    exchangeable acidity refers to amount of acid cation alluminium and hydrogen ions retained on soil colloid after active acidity is measured.

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