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 5
Hello !
It is C as when the smell is spread , People notice it at some other room . It's the same with perfume .
Ans 2:
Class : Class 7
Ans 3:
Class : Class 7
yes,Sharad you are right but can you explain