ENVSE 450 Exam 2
For fetuses, infants, and children, the hazards of heavy metals include:
a. Impairment of physical and mental development b. Damage to internal organs c. Brain damage d. Some forms of cancer **e. All of the above
To which pesticide group does Pyrethrin belong?
a. Organochlorine **b. Naturally occuring substance c. Organophosphate d. Carbamate e. None of the above
Substances on the CERCLA Priority List of Hazardous Substances have the following characteristics
a. They have known or suspected toxicity b. They have potential for human exposure at National Priority List (NPL) sites c. They have the lowest LD50 d. They are Group A1 carcinogens **e. a and b
Which neurotransmitter is involved in the mechanism of toxicity for organophosphate pesticides
acetylcholine
What is aluminum used in? (hygiene, stomach problems)
antiperspirants, pepto-bismols
Organophosphate are also known as:
cholinesterase inhibitors
Example of ELF (extremely low frequency) radiation
high tension power lines
What characteristics do CERCLA priority list of hazardous substances have? (2)
1) known or suspected toxicity 2) exposure risk
What is gold used to treat?
Arthritis
What type of reactors were involved in the Fukushima disaster?
Boiling water reactor
Which of the following is not a VOC?
iron oxide
Which of the following pesticides is derived from compounds in chrysanthemums?
Pyrethrins
Examples of solvents
TCE, PCE, Toluene, Benzene
The unit of exposure for x or gamma rays
roentegen
The category of biopesticides includes which of the following?
**a.Canola Oil b. Diazanon c. Paraquat d. Methyl Isocyanate e. DDT
The approximate dividing line between ionizing and non-ionizing radiation:
10 eV
A heavy metal has a specific gravity that is how many more times greater than waters specific gravity?
5 or more times higher
The occupational exposure limit for ionizing radiation is:
5 rem annually
Possible methods for exposure to metals include:
A) Inhalation of dusts B) Inhalation of metal fumes C) Skin contact with dusts D) Ingestion **E) All of the above
Which agency prepares the CERCLE Priority List of Hazardous Substances?
ATSDR
What does ATSDR stand for?
Agency for Toxic Substances and Disease Registry
The primary health effect(s) of concern for typical ionizing radiation exposures in the general public are:
Cancer and DNA damage
The symptoms of long-term exposure to lower levels of toxic metals include:
Chronic illness effects
According to the ACGIH classification system a designation of "A1" means:
Confirmed Human Carcinogen
What chromium is an essential nutrient?
Cr(III)
Which of the following forms of Chromium is classified as a carcinogen?
Cr(VI)
Which of the following pesticides has been used extensively to combat malaria around the world?
DDT
Which substance is suspected to have played a role in the human toxicity of Agent Orange?
Dioxin
Engineers may issue subjective and partial statements if such statements are in writing and consistent with the best interests of their employers, clients, or the public. (T or F)
False
Engineers may not be required to follow the provisions of state or federal law when such actions could endanger or compromise their employer or their clients' interests. (T or F)
False
Engineers may perform services outside of their areas of competence as long as they inform their employers or clients
False
Engineers shall not be required to engage in truthful acts when required to protect the public health, safety, and welfare. (T or F)
False
Agent Orange is an example of a (an):
Herbicide
Which type of non-ionizing radiation is most closely associated with heat lamps?
Infrared radiation
What is lithium used to treat?
Mania and bipolar
Bioaccumulation (biomaginfication) of heavy metals is a particular hazard associated with:
Mercury
Minimata disease was associated with ingestion of seafoods tainted with:
Mercury
Is iron oxide a VOC? (yes or no)
NO
The list of the most serious uncontrolled or abandoned hazardous waste sites in the United States for long term remediation under Superfund:
National Priority List (NPL)
Which of the following toxic metals is NOT among the top twenty compounds on the CERCLA priority list of hazardous substances?
Nickel
Three mile island, fukushima, and chernobyl are all examples of
Nuclear accidents
Which pesticide group does DDT belong to?
Organochlorine
Which of the following pesticides has relatively low human toxicity and relatively high environmental persistence?
Organochlorines
Carbamates are close relatives to what type of pesticide?
Organophosphate
To which pesticide group does Malathion belong?
Organophosphate
This category of insecticides is also known as cholinesterase inhibitors
Organophosphates
Which of the following pesticides has relatively high acute human toxicity and relatively low environmental persistence?
Organophosphates
What exposure is associated with lung cancer?
Radon
What source of radiation accounts for the largest annual effective dose in adults?
Radon
An EPA benchmark derived from the NOAEL through application of uncertainty and modifying factors
Reference Dose (RfD)
A unit of measure used to describe the amount of radioactivity in a sample of material is:
The curie or becquerel
An action may be legal but still violate professional or ethical codes (T or F)
True
Engineers shall act for each employer or client as faithful agents or trustees.
True
Engineers shall not reveal facts, data, or information without the prior consent of the client or employer except as authorized or required by law or this Code. (T or F)
True
Engineers shall undertake assignments only when qualified by education or experience in the specific technical fields involved. (T or F)
True
Engineers, in the fulfillment of their professional duties hold paramount the safety, health, and welfare of the public. (T or F)
True
If engineers' judgement is overruled under circumstances that endanger life or property, they shall notify their employers or clients and such other authority as may be appropriate. (T or F)
True
Which type of non-ionizing radiation also has a portion of its spectrum in the ionizing range?
Ultraviolet
Which group has the highest incidence and mortality for melanoma of the skin?
White