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    Question

    In the context of soil plasticity, which of the following statements is true?

    A Plasticity is the ability of soil to change its chemical composition under moist conditions. Correct Answer Incorrect Answer
    B Soils with less than 10% clay content exhibit plasticity. Correct Answer Incorrect Answer
    C Plastic soils are typically non-cohesive. Correct Answer Incorrect Answer
    D Soils with more than 15% clay exhibit plasticity. Correct Answer Incorrect Answer
    E Plasticity is the soil's capacity to absorb water and swell. Correct Answer Incorrect Answer

    Solution

    Soil plasticity refers to the soil's ability to change its shape under moist conditions. Soils containing more than 15% clay exhibit plasticity, which means they can be molded or shaped when wet and retain that shape when dry. This property is particularly important in determining the workability and structure of the soil.

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