WQA Level 1 Certification Practice Test 3 (50 Questions)

I can see on the hidden camera I attached to this web page that you are going to thoroughly enjoy taking this practice test.  I am almost jealous.  Well, don’t have too much fun.  This is after all, pretty serious stuff.

1.  Water has its maximum density at





2.  Water from which the minerals have been removed by the ion exchange process is known as "distilled water".



3.  Compounds are heterogeneous because they combine the atoms of two or more elements.



4.  An element is a substance which cannot be broken into a simpler substance without disrupting the atom.



5.  When water turns into steam at 212 degrees F, a _________________ change occurs.



6.  Which is not a characteristic of a compound?





7.  Protons and neutrons are found in the





8.  A pH of ________________ indicates a neutral water with acidity and alkalinity in balance.





9.  Manganese oxidizes much faster than iron.  For this reason, it is generally easier to remove from water.



10.  A water softener with a rated capacity of 20,000 grains should be able to soften _______________ gallons of a 20 grain hard water before regeneration is necessary.






11.  Water does not ionize easily.  It is extremely stable.



12.  The amount of hardness for water in the United States ranges from 1 to 350 grains.



13.  Rainwater is as soft as zero soft water.



14.  What type of ions replace calcium ions in the water softening process?





15.  Organic (chelated) iron is especially hard to remove from water.  If a water has an essentially neutral pH, the most effective means of removing this type of iron is considered to be:





16.  Inlet & outlet of a retention tank should be so arranged as to assure ________________ in the tank.




17.  Oxidizing filters convert ferrous iron into ferric iron.



18.  Coating steel surfaces with zinc does all of the following except





19.  Neutralizing filters are used primarily to correct corrosive hard water.



20.  Under normal conditions, water from which of the following is likely to contain the least amounts of free oxygen?






21.  Well waters generally contain more hydrogen sulfide than do surface waters.



22.  Which of the following is not an indication of the presence of alkalinity in water?






23.  The terms nasturtium, cucumber, grassy, violets, and vegetable in relation to water refer to




24.  Chlorine demand is a term common to the chlorination process.  It means:




25.  Iodine should be used for purification of drinking water only on an emergency basis because




26.  Photosynthesis is the process whereby plants manufacture carbohydrates out of water and chlorophyll.



27.  Algae & fungi belong to the same basic category of plant forms.



28.  Viruses can survive indefinitely under such conditions as freezing or drying.



29.  Chlorine is readily available for domestic needs in the form of calcium hypochlorite.



30.  Superchlorination requires the addition of much more chlorine than is usually found in municipal water at the tap.



31.  It is important to remember that the softening of any supply does not reduce total minerals from the water.



32.  Levels of manganese over ___________ can cause discoloration in the home.





33.  Hydrogen sulfide causing a smell in the hot water heater must have 3 components to exist.  Which is not one of them?





34.  Brine concentration is measured with a hydrometer instrument called a:





35.  As a water softener regenerate, potassium chloride dissolves nicely and can reach nearly the same high level of concentration as sodium chloride.



36.  A strong brine solution serves as a resin cleaner in and of itself.



37.  Which of the following resin cleaners can restore resin to its maximum capacity?





38.  The most common way alkalinity can be present in water is:





39.  Levels over _____________ are considered high for nitrate.





40.  The amount of  calcium bicarbonate & magnesium bicarbonate content in the water is referred to as:





41.  Two thirds of water treatment today are of the “__________________” design.





42.  Cation exchange resin carries a _______________________ charge.





43.  In a co-current flow system, both the service water and the regeneration brine flows in the same direction.



44.  The step during regeneration that is designed to rid the system of excess salt is called the:





45.  When using calcite to correct pH problems, 6-10 gpg of hardness will change 5.0 water to approximately what pH value?





46.  The pH scale is considered:





47.  Which of the following is an example of typical aeration?





48.  The verbal statement, "I promise you will be satisfied or I will give your money back." is an example of what type of warranty?




49.  Agreeing with a competing dealer to not sell a product for less than a set amount is a violation of what type of laws?





50.  The words "pure" or "purifier" should never be used in any circumstance when selling water treatment equipment.