EXERCISES: LESSON 4.
INSTRUCTIONS: Answer the following exercises by marking the lettered response that
best answers the exercise, by completing the incomplete statement, or by writing the
answer in the space provided at the end of the exercise.
After you have completed all the exercises, turn to "Solutions to Exercises" at the
end of the lesson and check your answers. For each exercise answered incorrectly,
reread the material referenced with the solution.
List the four physical characteristic standards for turbidity, color, odor, and taste
and state whether or not they are closely related to consumer acceptance.
Which of the following chemical concentrations constitutes grounds for:
a. 0.1 mg/l lead.
b. 230 mg/l sulfate.
d. 8.6 mg/l nitrate.
Which chemical concentration is in excess of the allowable secondary standard
and would render a water supply undesirable?
a. 240 mg/l sulfate.
b. 230 mg/l chloride.
d. 550 mg/l total dissolved solids.