Red Seal Plumbing Practice Exam

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Porous media where the grains are cemented together, such as sandstone, are considered what?

Unconsolidated
Compacted
Consolidated
Loose

The correct answer is: Consolidated

Porous media that are cemented together, such as sandstone, are considered consolidated. This term refers to solid materials that were once loose or unconsolidated, but have since undergone a process in which the grains have become bonded together through some sort of cement or bonding agent. Unconsolidated materials (option A) are those that lack this bonding and can be easily broken apart. Compacted (option B) refers to materials that have undergone compression and become denser, but they do not have the bonding of consolidated materials. Loose (option D) does not accurately describe materials that are cemented together as they are not in a state where they are not held together by anything.