Question

Write briefly about evaporation ?
Evaporation related questions
1. During summer , water kept in earthen pot become school because of the phenomenon
A) diffusion
B) Osmosis
C) evaporation
2 question- name two factors which increases the rate of evaporation?
3 question- Why do we wear cotton clothes in summer?

Write briefly about diffusion ?
Diffusion related question/answers
1 question- why diffusion of gas in water necessary?
2 question- why does ice floats on water?
3 question- how smell of perfume spreads in a room?
4 question- With the help of an activity show that diffusion becomes faster with increase in temperature?
Please please please solve all answers please
Who will give me right means perfect answer then I mark as brainliest

Answer 1

(1)evaporation
(2) (a)humidity of air (b)temperature
(3)we used to wear cotton clothes in summer because during summer we tend to sweat a lot and cotton fabric absorbs this sweat and helps us to keep cool.

Answer 2

the process of conversion of a liquid into its vapour state at any temperature below it's boiling point is called evaporation

1.c)evaporation
2.two factors which increases the rate of evaporation are the surface area , the temperature ,humidity and wind speed.
3.we should wear cotton clothes in summer because cotton is a good absorber of water and helps in observing the Sweat and exposing it to the atmosphere for easy evaporation thereby, causing cooling sensation

diffusion=diffusion is a process in which molecules of a substance move from higher concentration to lower concentration and goes on until a uniform mixer is formed
1)diffusion of gas in water is necessary because the diffusion of oxygen which helps for the survival of the animals and plants present in water
2)Ice is a solid but it has a cage like structure in which some spaces are present between the particles of water.these spaces are by the air particles. in fact thess spaces are larger as compared to the spaces present between the particles of water. thus the volume of ice is greater than that of water. hence, the density of ice is less than that of water. a substance with low density than water can float on water.thus,ice floats on water.

3)air have spaces between them.the particles of the perfume fill the spaces through the room. the kinetic energy of the perfume particles helps in filling the room with smell

4)activity
the smell of hot sizzling food reaches you several metres away but to get the smell of cold food you have to go close because particles of matter are continuously moving. they posses kinetic energy .as the temperature rises particles move faster .the particles of the Aroma of hot food mix with the particles of air and reach to us a several metres away but to get an aroma of cold food we have to go close because of articles that carries smell of cold food move slower as compared to particles that carries smell of hot sizzling food.

I hope it will help you