WASTE WATER ACTUAL TEST PAPER
SOLVED QUESTIONS FULL SOLUTION
●● The four categories of wastewater characteristics are?
Answer: physical, chemical, bacteriological,
and radiological.
●● The amount of wastewater collected depends on?
Answer: economic status, water rates, climate,
infiltration/inflow, and industry.
●● Physical characteristics are detected by the senses such as?
Answer: smell and sight
●● When anaerobic decomposition begins producing acid and
odorous gases.?
Answer: Begins when dissolved oxygen is gone
●● One mg/L or one ppm is?
Answer: one pound of material in a million pounds of water.
●● Organics are produced by
,Answer: plants, animals, or humans
●● It is not organic and examples are sand, metal, and rock.
Answer: "Inorganic"
●● What is toxic, corrosive, flammable, heavier than air, deadens the
sense of
smell, and has a rotten egg odor.
Answer: Hydrogen sulfide
●● What is lighter than air, explosive, colorless, and odorless?
Answer: Methane (natural) gas
●● What Oil and grease in wastewater may cause?
Answer: explosion, fires,stoppages and odor
●● Excessive chlorides interfere with treatment and effect wastewater
____
Answer: lab tests
●● The BOD test indicates the amount of organic matter that can be
oxidized by biological and
chemical action in how many days at what temperature ?
, Answer: 5 days at 20°C
●● Bacteria requiring free, uncombined oxygen are ________.
Answer: aerobic
●● Bacteria requiring combined oxygen are ________.
Answer: anaerobic
●● Bacteria able to metabolize free or combined oxygen are ________.
Answer: facultative
●● Disease-causing microorganisms are called ________.
Answer: pathogens
●● Waterborne diseases include typhoid, dysentery, cholera, and
________.
Answer: polio
●● Types of industrial waste are flammable oil, toxic gases, and
________.
Answer: acids and alkalis
●● is the state law for water pollution control in Texas?
SOLVED QUESTIONS FULL SOLUTION
●● The four categories of wastewater characteristics are?
Answer: physical, chemical, bacteriological,
and radiological.
●● The amount of wastewater collected depends on?
Answer: economic status, water rates, climate,
infiltration/inflow, and industry.
●● Physical characteristics are detected by the senses such as?
Answer: smell and sight
●● When anaerobic decomposition begins producing acid and
odorous gases.?
Answer: Begins when dissolved oxygen is gone
●● One mg/L or one ppm is?
Answer: one pound of material in a million pounds of water.
●● Organics are produced by
,Answer: plants, animals, or humans
●● It is not organic and examples are sand, metal, and rock.
Answer: "Inorganic"
●● What is toxic, corrosive, flammable, heavier than air, deadens the
sense of
smell, and has a rotten egg odor.
Answer: Hydrogen sulfide
●● What is lighter than air, explosive, colorless, and odorless?
Answer: Methane (natural) gas
●● What Oil and grease in wastewater may cause?
Answer: explosion, fires,stoppages and odor
●● Excessive chlorides interfere with treatment and effect wastewater
____
Answer: lab tests
●● The BOD test indicates the amount of organic matter that can be
oxidized by biological and
chemical action in how many days at what temperature ?
, Answer: 5 days at 20°C
●● Bacteria requiring free, uncombined oxygen are ________.
Answer: aerobic
●● Bacteria requiring combined oxygen are ________.
Answer: anaerobic
●● Bacteria able to metabolize free or combined oxygen are ________.
Answer: facultative
●● Disease-causing microorganisms are called ________.
Answer: pathogens
●● Waterborne diseases include typhoid, dysentery, cholera, and
________.
Answer: polio
●● Types of industrial waste are flammable oil, toxic gases, and
________.
Answer: acids and alkalis
●● is the state law for water pollution control in Texas?
