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प्रश्न
Molecules of a substance are always in a state of............ and so they possess .............
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उत्तर
Molecules of a substance are always in a state of motion and so they possess kinetic energy.
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संबंधित प्रश्न
The temperature at which a solid convert into a liquid is called its .........
Differentiate between melting point ,giving atleast one example of each.
Describe an experiment to demonstrate that a substance absorbs heat during melting without change in its temperature.
State the melting point of ice.
The fixed temperature at which matter changes state from solid to liquid is called ______.
A student heats a beaker containing ice and water. He measures the temperature of the content of the beaker as a function of time. Which of the following (Fig. 1.1) would correctly represent the result? Justify your choice.
A glass tumbler containing hot water is kept in the freezer compartment of a refrigerator (temperature < 0°C). If you could measure the temperature of the content of the tumbler, which of the following graphs (Fig.1.2) would correctly represent the change in its temperature as a function of time.
In an endothermic process, the speed of the molecules is ______ hence they move faster.
Sweating causes cooling because water has a ______.
The solid, liquid, and phases of water can coexist in equilibrium at ______.
