Very Small Particles Can Be Removed from Drinking Water By

question 14

Multiple Choice

Very small particles can be removed from drinking water by:

• A) boiling.
• B) sand filtering.
• C) use of activated charcoal.
• D) All of these are correct.
• E) both sand filtering and use of activated charcoal.

---

Definitions:

Consumer Surplus

The variance between the price consumers intend to pay for a good or service and the price they actually incur.

Marginal Utility

The extra pleasure or benefit gained by a consumer from using one more unit of a product or service.

Total Utility

The absolute gratification obtained from the utilization of a designated complete quantity of a good or service.

Total Utility

The total satisfaction received from consuming a certain amount of a good or service.