Which of the Following Statements Is TRUE

question 12

Multiple Choice

Which of the following statements is TRUE?

• A)Transmission by the faecal-oral route is always associated with water.
• B)Water is a reservoir for a number of human pathogens.
• C)Once the water supply is contaminated with faeces it cannot be treated to remove the pathogens.
• D)Bacteria are not carried in aerosols of water vapour.
• E)All of the above.

---

Definitions:

Surface Carboxylate Groups

Functional groups on a solid surface where a carbon atom is double-bonded to an oxygen atom and single-bonded to another oxygen atom that is in turn bonded to a metal or hydrogen, typically present on surfaces for chemical reactivity.

Intermolecular Interaction

Forces that mediate between molecules, including hydrogen bonds, van der Waals forces, and dipole interactions, important in determining physical properties.

Polyunsaturated Vegetable Oil

A type of vegetable oil containing fats that have more than one unsaturated carbon bond in the molecule, making them generally more liquid at room temperature.

Petroleum Oil

A naturally occurring flammable liquid consisting of complex hydrocarbons and found in geological formations beneath the Earth's surface.