An Effective Means Used Early in the 19th Century to Clear

question 21

Multiple Choice

An effective means used early in the 19th century to clear water of the majority of bacteria was the use of

• A) chlorine.
• B) iodine.
• C) alcohol.
• D) sand filters.

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Definitions:

Volume

A metric for quantifying the three-dimensional space an object or gas occupies.

°C

A degree of Celsius, a scale and unit of measurement for temperature.

Atm

A unit of pressure defined as atmospheric pressure, equivalent to the pressure exerted by the Earth's atmosphere at sea level.

Volume

The quantity of three-dimensional space occupied by a substance or item.