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Subject :NSO    Class : Class 9

A piece of chalk can be broken into small particles by hammering but a piece of iron cannot be broken into smaller particles by hammering. It illustrates that

A Particles of matter have space in between them
B Particles of matter possess kinetic energy
C Particles of matter attract one another
D All of these.

please tell me the answer

Ans 1:

Class : Class 9
It is (C)

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