Question 4017 of 223 · California Water Treatment Operator Exam
Total hardness is expressed in the laboratory as
Exactly one answer is correct.
You got of questions right. Here on the question pages nobody remembers which ones you got wrong. The trainer saves your progress and asks the mistakes again until they stick.
Or free: the 10 questions most people get wrong
Show solution
Correct answer to question 4017
- D: mg/L as calcium carbonate (CaCO3)
Explanation
Hardness and alkalinity are reported in terms of CaCO3 equivalents so different ions can be compared on one scale.
More questions: Laboratory Procedures
- 4018Which method uses a color change to show the presence of coliform bacteria in a 100 mL sample with only a yes or no answer?
- 4019The heterotrophic plate count (HPC) is used to
- 4020Which action reduces the risk of cross-contamination when dealing with reagents in a lab?
- 4021Safety Data Sheets (SDS) for each laboratory chemical give information on
- 4022When diluting concentrated acid in the lab, the correct procedure is to
- 4023If 10 mL of a stock solution is diluted to a final volume of 100 mL, the dilution factor is