Question

Hi friends,
Happy new year to all...
1)Explain why:-
a)air is used to inflate tyres.
b) steel is used to make railway lines.

2)a)What does the diffusion of gases tell us about their particles.
b) Give one example of diffusion of gases in a liquid.

*(Only bb, bs and moderator can answer)
#I need best ans, I request to all please don't give short ans.

Answer 1

1.a) Because of its availability it is used to inflate tyres. And air/ gases used to inflate the tyres because they can be compressible up to some extent of pressure.

b) steel is used to make railway lines because steel is very flexible and has the ability to expand. steel is used because when it expands it does not change it shape, it only becomes bigger making sure it is safe to travel by train.


2.a) Diffusion in gases is faster than in liquids & solids because in gases the particles are not fixed they can vibrate in all directions and move freely.

Hence diffusion of gases tells that the particles of a gas have  higher movements unlike in solids &liquids

b) Placing food coloring in a liquid will diffuse the color.

Answer 2

Answer:

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