27 Dec Polycyclic aromatic hydroc

_______________ are the major cause of stratospheric ozone depletion.

Chlorofluorocarbons (CFCs)

Perfluorochemicals (PFCs)

Polybrominated diphenyl ethers (PBDEs)

QUESTION 2

Many phthalates affect the _______________.

central nervous system

endocrine system

respiratory system

QUESTION 3

Which of the following groups of chemicals was widely used as insulating fluid in electrical equipment?

Dioxins

Polybrominated diphenyl ethers (PBDEs)

Polychlorinated biphenyls (PCBs)

QUESTION 4

Which of the following chemicals were not intentionally manufactured, but rather occur as a byproduct?

Dioxins and furans

Polybrominated diphenyl ethers (PBDEs)

Polychlorinated biphenyls (PCBs)

QUESTION 5

_______________ are widely used to degrease metals—for example, in the manufacture of electronic components.

Perfluorochemicals (PFCs)

Phthalates

Solvents

QUESTION 6

Which of the following is the most common medium for people’s exposures to solvents?

Dust

Groundwater

Meat or fish

QUESTION 7

Occupational asthma is known to be caused by synthetic organic chemicals, dusts, and _______________.

alpha radiation

certain bacteria

certain metals

QUESTION 8

Which of the following is true of polychlorinated biphenyls (PCBs)? PCBs are:

accidental byproducts of the production of an industrial chemical.

synthetic chemicals with no known natural source.

volatile and water-soluble.

QUESTION 9

Which of the following is the most likely source of phthalates in the indoor environment

Dry-cleaned clothing

Hair spray

Upholstery fabric

QUESTION 10

Sick building syndrome is a set of __________.

construction features of a building that make people feel ill

indoor air pollutants associated with construction materials

symptoms that people experience when they spend time in a building

QUESTION 11

In the human body, carbon monoxide (CO) _______________.

binds to hemoglobin, displacing oxygen

compromises the body’s defenses against airborne particulates

concentrates in the thyroid, causing thyroid cancer

QUESTION 12

Most solvents affect the _______________.

central nervous system

endocrine system

respiratory system

QUESTION 13

When automobiles burn gasoline, they:

emit ozone, which reacts with volatile organic compounds (VOCs) to form photochemical smog.

emit VOCs, which react with NOx and other chemicals to form photochemical smog.

increase ozone at ground level, contributing to depletion of ozone in the stratosphere.

QUESTION 14

Some likely human health impacts of polybrominated diphenyl ethers (PBDEs) are suggested by their chemical structure, which is similar to that of _______________.

human growth hormone

neurotransmitters

thyroid hormones

QUESTION 15

Polycyclic aromatic hydrocarbons (PAHs) are commonly present in _______________.

acid mine drainage

leaded gasoline

particulate matter

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