Which of the Following Is Correct About Pumice

question 31

Multiple Choice

Which of the following is correct about pumice?

• A) Frequently found in block form,which is then run onto a rag wheel to polish precious and semiprecious metal alloys in the laboratory
• B) Used in coated disks and bonded rotary devices primarily used in finishing procedures
• C) A major component of many prophylaxis pastes used to polish tooth structure,dental amalgam,and acrylic bases
• D) Used to smooth enamel,or finish metal alloys and ceramic materials

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Definitions:

External Costs

Costs that are not borne by the producer or consumer of a good or service, but by society as a whole, such as pollution.

Negative Externality

A cost that affects someone who did not choose to incur that cost or participate in the action causing it, often seen in pollution where the public pays the price for private industry actions.

MSC (Marginal Social Cost)

The complete expense incurred by society for the production of one more unit of a good or service, encompassing both individual costs and any external effects.

Marginal Social Cost

The total cost to society of producing an additional unit of a good or service, including both private costs and externalities.