1|Page
Level 4 Module 1: Water Treatment Exam
Questions and Answers 100% Pass
The greater the concentration of dissolved solids in an HVAC system's water, the greater the potential for
- ✔✔Corrosion
Dissolved gases that have almost no effect on water systems include: - ✔✔Nitrogen
Which of the following is caused by the presence of slime-producing biologic organisms in the water in
an HVAC system? - ✔✔Inadequate Heat Transfer
If blue litmus paper turns red when a water sample is tested, this indicates that the pH of the water is: -
✔✔Below 7.0
Adding chemicals to a solution tank should occur in the following sequence: - ✔✔Water first, then
chemicals
Which of the following is a mechanical filtration device used for mainting water quality? - ✔✔Strainer
Backwashing is used to prevent accumulated particles from clogging a: - ✔✔A Multimedia filter
Created by Katelyn Whitman © 2025, All Rights Reserved. 100% PASS GUARANTEE
Level 4 Module 1: Water Treatment Exam
Questions and Answers 100% Pass
The greater the concentration of dissolved solids in an HVAC system's water, the greater the potential for
- ✔✔Corrosion
Dissolved gases that have almost no effect on water systems include: - ✔✔Nitrogen
Which of the following is caused by the presence of slime-producing biologic organisms in the water in
an HVAC system? - ✔✔Inadequate Heat Transfer
If blue litmus paper turns red when a water sample is tested, this indicates that the pH of the water is: -
✔✔Below 7.0
Adding chemicals to a solution tank should occur in the following sequence: - ✔✔Water first, then
chemicals
Which of the following is a mechanical filtration device used for mainting water quality? - ✔✔Strainer
Backwashing is used to prevent accumulated particles from clogging a: - ✔✔A Multimedia filter
Created by Katelyn Whitman © 2025, All Rights Reserved. 100% PASS GUARANTEE
