A) the energy of the random motion of atoms and molecules increases.
B) the energy of the random motion of atoms and molecules decreases.
C) the energy of the random motion of atoms and molecules remains same.
D) the random motion of atoms and molecules becomes streamlined.
Correct Answer: A
Solution :
Option [a] is correct. Explanation : When the energy of the random motion of atoms and molecules of a substance increases and the molecules travel or vibrate or rotate with higher energies, the substance becomes hot.
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