Q18 of 160 Page 17

Which of the two diffuses faster: a liquid or a gas?

In the gaseous state, the particles move about randomly at high speed. Diffusion takes place because of the movements of particles of matters. The increase in the speed of movement increases the rate of diffusion. Hence, a gas will diffuse faster than a liquid.


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16

Name two gases which are supplied in compressed form in homes and hospitals.

 17

Write the full forms of the following:

(a) LPG (b) CNG

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Which of the two diffuses slower: bromine vapour into air or copper sulphate into water?

 20

State whether the following statement is true or false:

Red brown bromine vapour diffuse into air in a gas jar but the colourless air molecules do not diffuse into bromine vapour.