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    Question

    In the anaerobic digestion method of waste

    management:
    A Waste is processed in the presence of oxygen. Correct Answer Incorrect Answer
    B Waste is converted into biogas in the absence of oxygen. Correct Answer Incorrect Answer
    C Waste is incinerated to reduce its volume. Correct Answer Incorrect Answer
    D Waste is treated with chemicals to neutralize hazardous components. Correct Answer Incorrect Answer

    Solution

    Anaerobic digestion involves the breakdown of organic material by microorganisms in the absence of oxygen, producing biogas (which can be used as a source of energy) and digestate (a nutrient-rich substance that can be used as a fertilizer).

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