Compounds of Tin, Mercury, Arsenic, and Copper Are No Longer

question 52

Multiple Choice

Compounds of tin, mercury, arsenic, and copper are no longer used to prevent microbial growth in cooling water primarily because

• A) antibiotics are cheaper.
• B) other chemicals were shown to be much more effective.
• C) microbes developed resistance to these metals.
• D) their use contributes to serious pollution of natural waters.
• E) All of the answer choices are correct.

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Definitions:

Capillary Filling Time

A clinical test used to assess blood circulation by applying pressure to the skin to create blanching and then observing the time it takes for color to return.

Pallor

An unhealthy pale appearance typically indicating anemia or lack of blood supply.

Clubbing

A condition characterized by bulbous enlargement of the ends of one or more fingers or toes, usually associated with chronic oxygen deficiency or various diseases.

Convex Profile

An outwardly curved shape or surface, often describing the curvature of a facial profile.