Conduction, Convection and Radiation

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If a spoon is getting hot when placed in a cup of tea, what type of heat transfer is that?

conduction

If three spoons (metal, wood and plastic) with butter on top were place in a pot of boiling water, which would melt first and why?

Metal, metals are good conductors. Plastic and wood are both insulators

In which process does heat transfer occur through direct contact of particles?

conduction

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