Answers

2016-05-05T13:50:56+05:30
2016-05-05T14:12:45+05:30
When we light an incense stick in one corner of room its fragrance spreads in whole room because of the process involved DIFFUSION. It is because particles of matter are continuously moving in the air. Its parties vigourously spread and we can smell its fragrance in the whole room.
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