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Matter in Our Surroundings — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceMatter in Our Surroundings2 Marks
Question
What is meant by ‘diffusion’? Give one example of diffusion in gases.
✓

Answer

The spreading out and mixing of a substance due to the motion of its particles is called diffusion.
For example: Smell of food being cooked in the kitchen reaches us even from a considerable distance.

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