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  1. Which of the following are methods of heat transfer?

  2. A.

     Convection

    B.

     Evaporation

    C.

     Revolution

    D.

     Thermal Expansion

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    Answer : Option A

    Explanation :

    The three types of heat transfer
    Heat is transfered via solid material (conduction), liquids and gases (convection), and electromagnetical waves (radiation). Heat is usually transfered in a combination of these three types and seldomly occurs on its own.


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