I. It is a rapid, constant and irregular motion of tiny particles. II. It gives evidence that tiny particles of matter called molecules exist. III. It takes place only in gases. IV. It gives evidence that molecules are in a constant state of random motion. which of the combinations above is correct about Brownian notion?
- I,II and III only
- II,III and IV only
- I,III and lV only
-
l, ll and lV only
The correct answer is: D
Explanation
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