Wastewater Operator certification Grade 2 (Latest ) 100% Correct Questions & Answers -

Wastewater Operator certification Grade 2
(Latest ) Questions with
Answers 100% Correct {Grade A}
Safety:




What class of fire involves sodium and magnesium? - Correct answer class D




Safety:




What is the proper emergency chlorine kit for a 1-ton chlorine cylinder? - Correct


answer emergency kit B




Basic Chemistry:




The specific gravity standard for gases is_______ - Correct answer air




Basic Chemistry:




The standard for gases has a density of - Correct answer 1.29 g/L

,Basic Chemistry:




How many steps are the in coagulation? - Correct answer 3 steps




Basic Chemistry:




Low-temperature water can be compensated for when using alum by______ - Correct


answer increasing the alum dosage




Basic Chemistry:




When an electrolyte is dissolved in water to form an ion, the ion is said to be________ -

Correct answer dissociated




Basic Chemistry:




Which one of the following species is ozone?

,a. O2 (+3)


b. NO2


c. O3


d. N2O - Correct answer O3




Basic Chemistry:




name the laboratory glassware that can be used to heat liquids in an open flame? -


Correct answer flasks




Basic Chemistry:




When inserting glass tubing into a rubber hose or stopper, never use____for lubrication

- Correct answer oil




Basic Chemistry:

, Electrical units operating in areas exposed to flammable vapors should_______ -


Correct answer be explosion-proof




Basic Chemistry:




Usually, what is the % accuracy of a graduated cylinder and burette? - Correct answer


1%




Basic Chemistry:




The clarity of a trickling filter's effluent is considered good when the "Secchi" disk can


be read at a level of___ft - Correct answer 6ft




Basic Chemistry:




The clarity of the effluent from an activated sludge process is considered good when


the "Secchi" disk cab be read at a level of_______ft - Correct answer 6ft