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The degree of hotness and coldness of a body is called temperature of body. Heat is a form of energy, entry or exit of which correspondingly increases or decreases internal energy of a body when no work is done on the body or by the body. This air prevents the flow of heat from our body to the cold surroundings as air is bad conductor of heat. These ncert book chapter wise questions and answers are very helpful for cbse exam. Ncert class vii science chapter 4 heat aglasem schools. The quantity of heat absorbed or given out by a substance during a thermal change depends on what factors.
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