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    Question

    Energy that is produced commercially from coal is

    called –
    A Light energy Correct Answer Incorrect Answer
    B Kinetic energy Correct Answer Incorrect Answer
    C Thermal energy Correct Answer Incorrect Answer
    D Potential energy Correct Answer Incorrect Answer

    Solution

    Thermal enemy, but in most cases coal is used for electricity. The steel industry uses coal (or coke rather) in blast furnaces. Thermal energy is the part of the total internal energy of a thermodynamic system or sample of matter that results in the system temperature. This quantity may be difficult to determine or even meaningless unless the system has attained its temperature only through heating, and not been subjected to work input or output, or any other energy-changing processes.

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