CCHT Review Exam with Questions and Answers

CCHT Review Exam with Questions and Answers Which of the following substances is the most common impurity in tap water? a. Sodium chloride b. carbonic acid c. calcium nitrate d. calcium carbonate ANSWER D. calcium carbonate the average hemodialysis patient is exposed to how many liters of water a week? a. 10L b. 100L c. 350 L d. 1000 L ANSWER C. 350 L A return loop recycles water through the water treatment system because: a. it reduces the amount of water required b. it prevents stagnant spots c. of both a and b d. of neither a nor b ANSWER C. of both a and b In a water treatment system, feed water is adjusted to a temperature of: a. 55 F, using a heater and cold water b. 95 F, using a heater and cold water c. 77 F - 82 F, using hot water and a refrigeration unit