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Subject :NSO    Class : Class 5

Which one of the following facts provides the best evidence that matter may exist as tiny particles which can move at random?

A A drop of oil forms a very thin layer on the surface of water.
B Most metals conduct electricity.
C People in an enclosed space soon notice when medicated oil is being used
D A quantity of air can be compressed into a much smaller volume.

Ans 1:

Class : Class 7

Ans 2:

Class : Class 7
yes,Sharad you are right but can you explain

Ans 3:

Class : Class 5
Hello ! It is C as when the smell is spread , People notice it at some other room . It's the same with perfume .

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