Question

2.
An unburned incense stick (agarbatti) gives smell only when we come close to it
but burn incense stick gives smell we even far away from it. Why?​

Answer 1

Answer:

Because due to heating the molecules in incense stick start to collide with each other and it start to mix up with the air even more faster than when it is unburned. As a result the smell travels a long distance

Explanation:

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Answer 2

Explanation:

Because the smoke of the incense stick mix up in the air rapidly.