Quiz 2 Flashcards

1
Q

Typical trace element markers for emissions of coal-fired power plants are (select all that apply):
A) Mercury (Hg)
B) Chromium (Cr)
C) Zinc (Zn)
D) Aresnic (As)

A

A) Mercury (Hg)
D) Aresnic (As)

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2
Q

Which of the following mechanisms of collection of particles is effective for removing particles of <1.0 um?

A) Inertial Impaction
B) Interception
C) Diffusion
D) Both Interception and Diffusion

A

D) Both Interception and Diffusion

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3
Q

Background secondary particulate matter can be found abundant in the following size fraction:

A) 5.8 - 9.0 um
B) 4.7 - 5.8 um
C) .7 - 1.1 um
D) < 0.4

A

C) .7 - 1.1 um

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4
Q

The larger particles above 2.5 um can be emitted from industrial sources, mostly removed by gravitational settling and they are:

A) Accumulation range
B) Transient nuclei
C) Mechanically generated aerosol range
D) Aitken nuclei range

A

C) Mechanically generated aerosol range

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5
Q

Which catalyst support has been commonly used for air pollution control and why?

A

Honey combs due their low pressure drop

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6
Q

Go back and review.

A
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