Drinking Water from a Well Is Discovered to Have an Arsenic

question 21

Multiple Choice

Drinking water from a well is discovered to have an arsenic concentration of 3.4  10^-4 g of arsenic per liter. Does this value exceed the permissible level of arsenic in drinking water of 10 ppb?

• A) No, 3.4  10^-4 g is lower than the permissible value of 1.0  10^-5 g/L.
• B) Yes, 3.4  10^-4 g is higher than the permissible value of 1.0  10^-5 g/L.
• C) No, 3.4  10^-4 g is lower than the permissible value of 1.0  10^-3 g/L.
• D) Yes, 3.4  10^-4 g is higher than the permissible value of 1.0  10^-3 g/L.
• E) It is not possible to determine the answer from the information given.

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Definitions:

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Primary Sexual Development

The development of the reproductive organs and structures that occur during puberty.

Secondary Sexual Development

The physical changes that occur during puberty, aside from the reproductive organs, such as development of breasts in females and deepening of the voice in males.

Precocious Puberty

A condition where children start developing physical signs of puberty earlier than usual, typically before the age of 8 in girls and 9 in boys.