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    Question

    When a liquid is heated in a container, which of the

    following processes primarily causes the heat transfer within the liquid?┬а┬а
    A Radiation Correct Answer Incorrect Answer
    B Conduction Correct Answer Incorrect Answer
    C Convection Correct Answer Incorrect Answer
    D Reflection Correct Answer Incorrect Answer

    Solution

    In liquids and gases, convection is the primary mode of heat transfer.┬а┬а Hot liquid becomes lighter (lower density) and rises, while cooler liquid (higher density) sinks, creating convection currents.┬а┬а Conduction happens mainly in solids; radiation involves electromagnetic waves and does not need a medium.

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