What Are Porous and Non Porous Rocks?

Answer

A non porous rock is a rock that or which has interlocking grains so that water cannot get into it while a porous rock is like a sponge. Rocks with rounded grains are normally more crumbly and softer than rocks with interlocking grains.
Q&A Related to "What Are Porous and Non Porous Rocks"
A non porous rock is a rock which has interlocking grains so water can't get into it. A porous rock is like a sponge and a non porous rock is like a stone.
http://wiki.answers.com/Q/What_are_layers_of_porou...
Non-porous:not porous; especially not having vessels that appear as pores. Thanks for using ChaCha.
http://www.chacha.com/question/what-does-non-porou...
( ′pör·əs ′ber·iŋ ) (design engineering) A bearing made from sintered metal powder impregnated with oil by a vacuum treatment.
http://www.answers.com/topic/porous-bearing
1. Dampen the counter top a little with the damp cloth/sponge. Apply the toothpaste to the damp cloth/sponge and wipe the counter top in small, circular motions, applying more pressure
http://www.ehow.com/how_2112324_remove-stains-nonp...
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