Assignment: Fluid in electrical equipment

Assignment: Fluid in electrical equipment

Assignment: Fluid in electrical equipment

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

[removed]		Dioxins
[removed]		Polybrominated diphenyl ethers (PBDEs)
[removed]		Polychlorinated biphenyls (PCBs)

1 points

Question 2

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

[removed]		alpha radiation
[removed]		certain bacteria
[removed]		certain metals

1 points

Question 3

1. Which of the following products are made using processes that involve perfluorochemicals (PFCs)?

[removed]		Consumer electronics
[removed]		Flexible plastic containers
[removed]		Non-stick coatings

1 points

Question 4

1. The effect of _______________ in inducing _______________ appears to have no threshold.

[removed]		lead / neurotoxicity
[removed]		methylmercury / decrement in IQ
[removed]		particulates / fibrosis

1 points

Question 5

1. In the United States today, young children get most of their exposure to the lead in lead paint by __________.

[removed]		ingesting chips of paint
[removed]		ingesting dust that contains lead
[removed]		inhaling airborne lead

1 points

Question 6

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

[removed]		Dust
[removed]		Groundwater
[removed]		Meat or fish

1 points

Question 7

1. _______________ are the major cause of stratospheric ozone depletion.

[removed]		Chlorofluorocarbons (CFCs)
[removed]		Perfluorochemicals (PFCs)
[removed]		Polybrominated diphenyl ethers (PBDEs)

1 points

Question 8

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

[removed]		binds to hemoglobin, displacing oxygen
[removed]		compromises the body’s defenses against airborne particulates
[removed]		concentrates in the thyroid, causing thyroid cancer

1 points

Question 9

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

[removed]		Perfluorochemicals (PFCs)
[removed]		Phthalates
[removed]		Solvents

1 points

Question 10

1. Hearing loss is associated not only with exposure to noise, but also with exposure to _________.

[removed]		air fresheners
[removed]		household pesticides
[removed]		secondhand smoke

1 points

Question 11

1. Which of the following pollutants is a key contributor to acid deposition?

[removed]		Carbon dioxide
[removed]		Carbon monoxide
[removed]		Ozone
[removed]		Sulfur dioxide

1 points

Question 12

1. When automobiles burn gasoline, they:

[removed]		emit ozone, which reacts with volatile organic compounds (VOCs) to form photochemical smog.
[removed]		emit VOCs, which react with NOx and other chemicals to form photochemical smog.
[removed]		increase ozone at ground level, contributing to depletion of ozone in the stratosphere.

1 points

Question 13

1. Many phthalates affect the _______________.

[removed]		central nervous system
[removed]		endocrine system
[removed]		respiratory system

1 points

Question 14

1. Sick building syndrome is a set of __________.

[removed]		construction features of a building that make people feel ill
[removed]		indoor air pollutants associated with construction materials
[removed]		symptoms that people experience when they spend time in a building

1 points

Question 15

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

[removed]		human growth hormone
[removed]		neurotransmitters
[removed]		thyroid hormones