Exam (elaborations)
Water Treatment practice Exam|39 Questions & Answers
Water Treatment practice Exam|39 Questions & Answers
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Water Treatment practice Exam|39 Questions & Answers
When measuring finished water, how often is it recommended to check
turbidity? - -Continuously
- Which of the following chemicals is considered most dangerous to handle
A) sodium chloride B) bicarbonate of soda C) caustic soda D) soda ash - -
Caustic soda
- The ability to neutralize acids is called A) pH B) alkalinity C) Langlier Index
D) hardness - -Alkalinity
- Which Emergency Kit should be used to repair a leaking 150 lb chlorine gas
cylinder? A) kit A B) kit B C) kit C D) fire department kit - -Kit A
- To eliminate a build up of calcium deposits in filters A) wash filter B)
backwash several times until gone C) wash filter with dilute acetic acid D)
add a disinfectant - -C) wash filter with dilute acetic acid
- When testing a water sample for Dissolved Oxygen from a non-preserved
bottle, what is the preferred holding time? - -Test immediately
- Lights are setup around the perimeter of a fence with a video camera at a
treatment plant to provide luminescence for? - -Deterrence
- Where is the best place to read the amount of a sample on glassware? - -
In the middle where the curvature meets the water (meniscus)
- What is the best way to check on a delivery of chemicals or materials once
you meet the driver coming in? - -Ask to see the drivers credentials
- When performing a titration to determine total alkalinity, what is the point
called where the indicator changes color? - -Endpoint
- The process of adding air to water or water to air is called? - -Aeration
- What will often cause erratic operations in a pneumatic instrument? A)
high temp B) carbon dioxide in air supply C) over sized air supply D) oil in air
supply - -D) oil in air supply
- According to the Safe Drinking Water Act what can help to provide
corrosion control? - -pH & alkalinity
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