Question

put an un lit incense stick in a corner of your class.how close do you have to go near it so as to get its smell? now light the incense stick.what happens?do you get the smell sitting at a distance? record your observation

Answer 1

we have to go very close to the unlit incense stick so as to get its smell...but if we light the incense stick, we can get its smell from a far distance also...this process is called diffusion....