What Makes Emery Different from Corundum

question 33

Multiple Choice

What makes emery different from corundum?

• A) Impure micro-crystals make up corundum.
• B) Impure micro-crystals make up emery.
• C) Corundum is almost pure silicate.
• D) Emery is almost pure silicate.
• E) Nothing; they are actually the same material.

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Definitions:

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Wall paintings from the Neolithic period, found in various archaeological sites, which depict scenes from everyday life, animals, and human figures.

Warfare

The engagement in or activities involved in war or conflict, including strategies, tactics, and operations conducted by armed forces.

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A black, viscous mixture of hydrocarbons often used for paving roads and waterproofing.