Q2 of 65 Page 6

Define vapourization.

Vapourization is the process that takes place when as substance is converted from a liquid or a solid to gas. In vapourization, the change of state occurs.


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7

By which physical process the fragrance of burning an incense stick spreads all around?

 1

(i) Higher the melting point of a substance, …… will be the force of attraction between its particles.

(ii) Particles from the bulk of the liquid gain energy to change into ……… state.


(iii) Naphthalene undergoes the process of ……….

 3

Why particles start vibrating in solids?

 4

Convert the temperature of 70° C to the Kelvin scale.