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The process of direct transmission of heat through a material is known as __________

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The process of direct transmission of heat through a material is known as __________

(a) Conduction

(b) Radiation

(c) Thermal insulation

(d) Thermal energy

I had been asked this question in an international level competition.

This interesting question is from Thermal Insulation topic in chapter Air Conditioning, Thermal Insulation, Stones & Ferrous Metals of Construction & Building Materials

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Right answer is (a) Conduction

The best explanation: The process of direct transmission of heat through a material is known as conduction. The amount of heat transfer by this process depends on various factors like temperature difference, the conductivity of the medium, the time for which the flow takes place etc.

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