New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    What is the primary function of humus in soil?

    A Increase salinity Correct Answer Incorrect Answer
    B Reduce porosity Correct Answer Incorrect Answer
    C Enhance nutrient retention Correct Answer Incorrect Answer
    D Promote waterlogging Correct Answer Incorrect Answer
    E Decrease microbial activity Correct Answer Incorrect Answer

    Solution

    Humus improves cation exchange capacity (CEC), retaining nutrients like Ca² ⁺ , K ⁺ , and Mg² ⁺ for plant uptake.

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