Class D Basic Water Practice Test|\ |\ |\ |\ |\ |\
questions with answers |\ |\
A trench 24in wide 800ft long and 4ft deep is to be
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
excavated. The amount of soil excavated is? - CORRECT |\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔6400ft |\
An elevated storage tank had pipe 150 feet above ground
|\ |\ |\ |\ |\ |\ |\ |\ |\
when full water pressure at the bottom psi should be? -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔65 |\ |\
Chlorine dosage for water is 2.7mg/l if chlorine residual
|\ |\ |\ |\ |\ |\ |\ |\ |\
after 30 minutes is 0.8mg/l. What is demand expressed in
|\ |\ |\ |\ |\ |\ |\ |\ |\
mg/l? - CORRECT ANSWERS ✔✔1.9
|\ |\ |\ |\ |\
Water is pumped 250 gallons a min. How long to fill
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
100,000 gallon tank? - CORRECT ANSWERS ✔✔6.6
|\ |\ |\ |\ |\ |\
A free chlorine residual of 0.6mg/l is desired how many
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
mg/l of chlorine will be needed when chlorine demand of
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
water is 2.2mn/l? - CORRECT ANSWERS ✔✔1.6
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A chlorine dosage of 2mg/l is to be added to 600,000
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
gallons of water how many pounds of chlorine 100% are
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
, needed to obtain this concentration? - CORRECT
|\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔10 |\
The hydrologic cycle is? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\
✔✔Recycling of water between the earth & atmosphere |\ |\ |\ |\ |\ |\ |\
Basic water PH reading is? - CORRECT ANSWERS ✔✔8.5
|\ |\ |\ |\ |\ |\ |\ |\
A chemical of water impacting scaling is? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔Calcium |\
What is Raw water? - CORRECT ANSWERS ✔✔Untreated
|\ |\ |\ |\ |\ |\ |\ |\
water
Regulated chemical compound formed when disinfectants
|\ |\ |\ |\ |\
react with naturally occurring organic matter? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔By products THM/HAA
|\ |\ |\ |\
Diseases by contaminated water also known as waterborn
|\ |\ |\ |\ |\ |\ |\
disease are? - CORRECT ANSWERS ✔✔Dysentery,
|\ |\ |\ |\ |\ |\ |\
Hyphoid, Giardiasis, Hepatitis |\ |\
A fire and explosion exsist if granulated disinfectant,
|\ |\ |\ |\ |\ |\ |\ |\
calcium hydrochlorite come in contact with? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔Oil petro products |\ |\ |\
questions with answers |\ |\
A trench 24in wide 800ft long and 4ft deep is to be
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
excavated. The amount of soil excavated is? - CORRECT |\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔6400ft |\
An elevated storage tank had pipe 150 feet above ground
|\ |\ |\ |\ |\ |\ |\ |\ |\
when full water pressure at the bottom psi should be? -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔65 |\ |\
Chlorine dosage for water is 2.7mg/l if chlorine residual
|\ |\ |\ |\ |\ |\ |\ |\ |\
after 30 minutes is 0.8mg/l. What is demand expressed in
|\ |\ |\ |\ |\ |\ |\ |\ |\
mg/l? - CORRECT ANSWERS ✔✔1.9
|\ |\ |\ |\ |\
Water is pumped 250 gallons a min. How long to fill
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
100,000 gallon tank? - CORRECT ANSWERS ✔✔6.6
|\ |\ |\ |\ |\ |\
A free chlorine residual of 0.6mg/l is desired how many
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
mg/l of chlorine will be needed when chlorine demand of
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
water is 2.2mn/l? - CORRECT ANSWERS ✔✔1.6
|\ |\ |\ |\ |\ |\
A chlorine dosage of 2mg/l is to be added to 600,000
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
gallons of water how many pounds of chlorine 100% are
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
, needed to obtain this concentration? - CORRECT
|\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔10 |\
The hydrologic cycle is? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\
✔✔Recycling of water between the earth & atmosphere |\ |\ |\ |\ |\ |\ |\
Basic water PH reading is? - CORRECT ANSWERS ✔✔8.5
|\ |\ |\ |\ |\ |\ |\ |\
A chemical of water impacting scaling is? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔Calcium |\
What is Raw water? - CORRECT ANSWERS ✔✔Untreated
|\ |\ |\ |\ |\ |\ |\ |\
water
Regulated chemical compound formed when disinfectants
|\ |\ |\ |\ |\
react with naturally occurring organic matter? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔By products THM/HAA
|\ |\ |\ |\
Diseases by contaminated water also known as waterborn
|\ |\ |\ |\ |\ |\ |\
disease are? - CORRECT ANSWERS ✔✔Dysentery,
|\ |\ |\ |\ |\ |\ |\
Hyphoid, Giardiasis, Hepatitis |\ |\
A fire and explosion exsist if granulated disinfectant,
|\ |\ |\ |\ |\ |\ |\ |\
calcium hydrochlorite come in contact with? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔Oil petro products |\ |\ |\
