NEHA-Air Quality & Noise Pollution
The precise levels at which specific air pollutants become false
a health hazard are relatively easy to establish by
existing surveillance systems.
Choose one answer.
a.True
b. False
Particulates larger than 10 microns can penetrate easily false
into the respiratory tract.
Choose one answer.
a.True
b. False
It is possible to control noise all of the above
Choose one answer.
a.at the source
b.in its path of transmission
c. where it is received
d.all of the above
Fluorocarbons in the atmosphere are of concern because all of the above
they may
Choose one answer.
a.react with the ozone in the upper atmosphere,
thus reducing the total amount of ozone
available
b.cause an increase in ultraviolet radiation reaching
the earth
c. cause an increase in skin cancers and changes in
our climate, animal, and plant life
d.all of the above
, The terms "washout" and "rainout" both refer to a true
cleansing process of pollutants in the atmosphere.
Choose one answer.
a. True
b. False
A_____is a dimensionless unit to express physical intensity decibel
or sound pressure levels.
Choose one answer.
a. noise level
b. decibel
c. hertz
d. sound pressure level (SPL)
The frequency of a sound determines its pitch. true
Choose one answer.
a. True
b. False
When two pollutants are combined, the effects are synergism
greater than the sum of the individual effects. This is
called
Choose one answer.
a. commensalism
b. synergism
c. magnification
d. multiplication
Scrubbers are wet collectors generally used to remove fog, mist, or dust
particles that form as a
Choose one answer.
a. nonsoluable vapor
b. mist, solid, or vapor
c. fog, mist, or dust
d. fume, dust, or mist
Precipitation accomplishes an effective cleansing process all of the above
of pollutants in the atmosphere by
Choose one answer.
a. accumulation of small particles in the formation of
raindrops or snowflakes in clouds
b. the washing out of scavenging of large particles by
falling raindrops or snowflakes
c. removal of gaseous pollutants by dissolution and
absorption
d. all of the above
A deterioration in the ozone layer of the stratosphere can true
cause an increase in ultraviolet radiation reaching the
earth.
Choose one answer.
a. True
b. False
The precise levels at which specific air pollutants become false
a health hazard are relatively easy to establish by
existing surveillance systems.
Choose one answer.
a.True
b. False
Particulates larger than 10 microns can penetrate easily false
into the respiratory tract.
Choose one answer.
a.True
b. False
It is possible to control noise all of the above
Choose one answer.
a.at the source
b.in its path of transmission
c. where it is received
d.all of the above
Fluorocarbons in the atmosphere are of concern because all of the above
they may
Choose one answer.
a.react with the ozone in the upper atmosphere,
thus reducing the total amount of ozone
available
b.cause an increase in ultraviolet radiation reaching
the earth
c. cause an increase in skin cancers and changes in
our climate, animal, and plant life
d.all of the above
, The terms "washout" and "rainout" both refer to a true
cleansing process of pollutants in the atmosphere.
Choose one answer.
a. True
b. False
A_____is a dimensionless unit to express physical intensity decibel
or sound pressure levels.
Choose one answer.
a. noise level
b. decibel
c. hertz
d. sound pressure level (SPL)
The frequency of a sound determines its pitch. true
Choose one answer.
a. True
b. False
When two pollutants are combined, the effects are synergism
greater than the sum of the individual effects. This is
called
Choose one answer.
a. commensalism
b. synergism
c. magnification
d. multiplication
Scrubbers are wet collectors generally used to remove fog, mist, or dust
particles that form as a
Choose one answer.
a. nonsoluable vapor
b. mist, solid, or vapor
c. fog, mist, or dust
d. fume, dust, or mist
Precipitation accomplishes an effective cleansing process all of the above
of pollutants in the atmosphere by
Choose one answer.
a. accumulation of small particles in the formation of
raindrops or snowflakes in clouds
b. the washing out of scavenging of large particles by
falling raindrops or snowflakes
c. removal of gaseous pollutants by dissolution and
absorption
d. all of the above
A deterioration in the ozone layer of the stratosphere can true
cause an increase in ultraviolet radiation reaching the
earth.
Choose one answer.
a. True
b. False
