1.

The thermal expansion of solids is the least among solids, liquids and gases. Justify.

Answer»

Solution :(i) Effect of external supply of heat energy on molecular ARRANGEMENT of a substance.
(II) Comparison of forces acting between the molecules in solids, liquids and GASES.
(III)The effect of heat on the molecular arrangement of a substance.
(iv) Comparison of the efect in solid, LIQUID and gases.


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