Question

Why are some solids porous. Give examples.

Answer 1

Explanation:

“Porous materials” are having high developed 'internal surface area' which has been used for the purpose of performing some specific function. Almost all of the solids are having porous except for the ceramic coated materials which are fired at extremely high temperatures

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Answer 2

Answer:

porous materials consist of solid constituent inter mingled with voids

Explanation:

for example solids