Give reasons : a) a gas fils completely the vessel , in which it is kept . b) a gas exert pressure on the walls of the container . c) a wooden table should be called a solid .d)we can easily our hand in air , but to do the same through a solid block of wood we need a karate expert .
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a) gases diffuse very fast in air.
b) particles of gases move at a very high speed colliding the walls of the container
c) it is rigid
d) Air is less dense and the inter molecular spaces are high
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