Question

almonds, thought. cold. cold-
drinke smell of perfume
Give reasons for the following
observation:
The smell of hot sizzling food
reaches you several metres
away, but to get the smell from
cold food you have to go close.
3. A diver is able to cut through
water in a swimming pool. Whici
hartu of matter does thi
​

Answer 1

the smell of food reaches us by the process of diffusion of gases ( released by the food ) into the air.

so , the smell of hot sizzling food reaches us quickly even when we are several metres away because the rate of diffusion if hot gases is much faster than the rate of diffusion of cold gases released by cold food...

......................................

3. the observation that a diver is able to cut through water in a swimming pool show that though there is a quite strong force of attraction between the particles of a liquid ( water ) which holds them together but the force is not strong enough to hold the particles of a liquid in a fixed position...

so, by applying somewhat greater force , a diver is able to overcome the force of attraction present among the particles of water and hence cut through water in swimming pool...