When an incense stick is lit in one corner of a room, its odour can be smelt from all the corners. This is because of the phenomenon called:
A
Evaporation
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B
Sublimation
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C
Vapourization
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D
Gaseous diffusion
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Solution
The correct option is D Gaseous diffusion When an incense stick is lit in the corner of a room, its fragrance spreads quickly in the entire room. This happens because the particles of matter are continuously moving in all directions. This phenomenon is known as diffusion.