NERC Study Guide Pre test Exam Questions and Answers updated 2023/2024
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Course
NERC
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NERC
NERC Study Guide Pre test Exam Questions and Answers updated 2023/2024
An electrical transformer leak of PCBs resulted in the destruction of millions of dollars’ worth of chicken and eggs in:
a. Montana
b. New York
c. Michigan
d. Wisconsin - correct answer Montana
The primary route o...
NERC Study Guide Pre test Exam Questions
and Answers updated 2023/2024
An electrical transformer leak of PCBs resulted in the destruction
of millions of dollars’ worth of chicken and eggs in:
a. Montana
b. New York
c. Michigan
d. Wisconsin - correct answer Montana
The primary route of entry of PCBs into human is:
a. absorption
b. inhalation
c. inoculation
d. ingestion - correct answer ingestion
Which one of the following has not been shown to be associated
with PCBs?
a. live cancer
b. fertility
c. abnormal cell multiplication
d. low birth weight - correct answer fertility
Which of the following would most likely contain the highest
proportion of PCBs?
a. perch
b. sunfish
c. brook trout
d. chinook salmon - correct answer chinook salmon
The most characteristic symptom of individuals occupationally
exposed to PCBs is:
,a. chloracne
b. live cancer
c. visual disturbance
d. physical tremor - correct answer chloracne
A major worry associated with prolonged, low-level PCB
exposure is:
a. general tiredness
b. loss of appetite
c. liver cancer
d. reproductive problems - correct answer liver cancer
Which one of the following was not initially associated with
PCBs?
a. minimata disease
b. yusho disease
c. yu-cheng disease
d. chlorance - correct answer minimata disease
Which one of the following statements is true?
a. dibenzofurans have been associated with babies being born
with dark skin discoloration
b. there is no definitive evidence that links PCBs with cancer and
other chronic health problems in humans
c. PCBs concentration in Lake Michigan has had a major effect
on the automobile manufacturing industry
d. a major effect of PCBs is its ability to accumulate in lean body
tissues - correct answer there is no definitive evidence that
links PCBs with cancer and other chronic health problems in
humans
The approved method of disposing of PCBs is:
a. dealing them in barrels and burying them in landfills
,b. high-temperature incineration
c. detoxification and discharge into deep ocean valleys
d. biodegrading them, sealing them and using them as fill -
correct answer high-temperature incineration
Which of the following statements is true?
a. dioxin is manufactured as a component of hexachlorophene
b. dioxin had not been shown to be related to human deaths
c. dioxin is formed as a unwanted by-product of herbicide
manufacturing
d. dioxin can enter the atmosphere through evaporation -
correct answer dioxin is formed as a unwanted by-product of
herbicide manufacturing
Which one of the following is not a major source of human
exposure to dioxin?
Consumption of contaminated:
a. fish
b. meat
c. dairy products
d. water - correct answer water
The statement "dioxin is the most toxic of all man-made
chemicals" is somewhat misleading because of the testing done
on:
a. rats
b. guinea pigs
c. hamsters
d. mice - correct answer guinea pigs
Immune system interference has been demonstrated with dioxin
exposure in all the following except:
a. humans
, b. rats
c. mice
d. hamsters - correct answer mice
Perhaps the most significant long-term effect of dioxin exposure
appears to be:
a. disruption of hormonal regulation of reproduction
b. possibility of liver cancer
c. teratogenic effects on the unborn
d. development of tissue affinity for other toxic substances -
correct answer disruption of hormonal regulation of
reproduction
Which one of the following general human health problems has
been definitively associated with general exposure to dioxin?
a. liver cancer
b. chloracne
c. increased incidence of soft tissue sarcoma
d. multiple myelomas - correct answer chloracne
What is a major issue that is confronting public health
professionals responsible for setting exposure limits to TCCD?
a. multiple chronic effects have been observed at low level
exposure
b. the chemical seldom appears alone
c. irritating effects have been shown at low levels of exposure
d. long-term exposure seems to produce degenerative diseases -
correct answer the chemical seldom appears alone
Perhaps the number one cause of disease as a result of general
environmental exposure is:
a. TCCD
b. PCBs
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