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Subjects
Science State Board
Class 9
Matter around us
Textbook questions
8.
Answer very briefly I
Exercise condition:
4
m.
1.
Diffentiate between absorption and adsorption.
Absorpti
on:
Adsorption is an exothermic process.
It is bulk phenomenon, i.e., occurs throughout the body of the material.
Absorption is an endothermic process.
It is surface phenomenon, i.e. it occurs only at the surface of the adsorbent.
It is bulk phenomenon, i.e., occurs throughout the body of the material.
It is surface phenomenon, i.e. it occurs only at the surface of the adsorbent.
Adsorption is an exothermic process.
Absorption is an endothermic process.
Adsorpti
on:
It is bulk phenomenon, i.e., occurs throughout the body of the material.
It is surface phenomenon, i.e. it occurs only at the surface of the adsorbent.
Absorption is an endothermic process.
Adsorption is an exothermic process.
Adsorption is an exothermic process.
It is bulk phenomenon, i.e., occurs throughout the body of the material.
Absorption is an endothermic process.
It is surface phenomenon, i.e. it occurs only at the surface of the adsorbent.
2.
Define Sublimation.
The conversion of a
substance
molecules
atoms
elements
from the
solid to the gaseous
solid to the solid
solid to the liquid
solid to the vapour
state without becoming liquid is called sublimation.
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