The MCL for drinking water is the legal limit for the concentration of a contaminant
expressed in ppm or ppb. This is always a lower concentration than the MCLG value
for the same contaminant.
True
False
The MCL for drinking water is the legal limit for the concentration of a contaminant
expressed in ppm or ppb. This is always a lower concentration than the MCLG value
for the same contaminant.
TrueFalse
The “Big Six” polymers are all classified as thermoplastics because they
A. are all used as insulators.
B. can be melted and shaped.
C. are all crystalline.
D. are all amorphous.
All of these pollutants can be detected by their odors except:
A. CO
B. O3
C. SOx
D. NOx
Refer to this table when answering Questions.
Which butter substitute has the highest percentage of trans fats?
A. Benecol
B. Brummel & Brown
C. I Can’t Believe It’s Not Butter
D. All of the choices are the same.
Complete the following statement while ignoring any thermodynamic considerations. A
candle may be considered a more efficient producer of light than a flashlight because it
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A. converts chemical energy directly into light.
B. produces more heat than a flashlight.
C. does not have a battery to recharge or replace.
D. may be used in remote locations far from electrical networks or power lines.
Which of the following are general goals for green chemical synthesis methods?
I. There is less waste.
II. Harsh reagents are avoided.
III. It uses recombinant technology.
IV. It needs intense purification.
A. I and IV only
B. II and III only
C. III and IV only
D. I, II, and III only
For linear n-hexane, C6H14, which molecular representation is correct?
A.
B.
C.
D.
DNA has a backbone that consists of alternating
A. base pairs.
B. sugars and proteins.
C. phosphates and sugars.
D. proteins and bases.
Which is the correct Lewis structure of a chlorine atom and the ion that chlorine forms?
A.
B.
C.
D.
Nylon is classified as a polyamide because it contains which of the following linkages?
A.
B.
C.
D.
Why are HFCs environmentally superior to the currently used HCFCs?
A. HFCs are not flammable.
B. HFCs do not contain chlorine.
C. HFCs are lighter and may be transported more easily.
D. HFCs are less reactive than HCFCs.
Which is not a consequence of hydrogen bonding between water molecules?
A. Water has a high boiling point.
B. Ice floats on water.
C. Water has a high specific heat.
D. Water is colorless and odorless.
What functional groups are common to both of structures below?
A. acid
B. alcohol
C. amide
D. amine
Which type of battery is widely used to store the excess energy generated by windmill
farms and solar panels?
A. alkaline
B. lithium ion
C. lead acid
D. nickel-metal hydride
Which anthropogenic pollutants are implicated in the formation of most acidic
precipitation?
A. carbon oxides
B. phosphoric acid and hydrochloric acid
C. ozone and carbon monoxide
D. nitrogen oxides and sulfur oxides
Advertising claims sometimes state that adding something mechanical to a car’s engine
will allow it to recover 100% of the energy that comes from burning gasoline. You
should be skeptical of such claims because they violate the
A. first law of thermodynamics.
B. second law of thermodynamics.
C. law of conservation of matter.
D. activation energy requirements of all chemical reactions.
Which correctly describes groundwater?
A. any fresh water found above ground in lakes and rivers; usually needs treatment to
remove harmful contaminants
B. any water found above ground in lakes and rivers; usually free of harmful
contaminants
C. any water taken from aquifers
D. none of the above.
Which statement best describes the functions of the COX-1 and COX-2 enzymes?
A. COX-1 primarily makes hormones that maintain proper kidney function and repair
the stomach lining while COX-2 makes prostaglandins associated with inflammation,
pain, and fever.
B. COX-1 makes prostaglandins associated with inflammation, pain, and fever while
COX-2 primarily makes hormones that maintain proper kidney function and repair the
stomach lining.
C. COX-1 primarily makes steroids related to secondary sexual characteristics while
COX-2 makes prostaglandins associated with inflammation, pain, and fever.
D. COX-1 makes NSAID drugs associated with inflammation, pain, and fever like
ibuprofen and aspirin while COX-2 primarily makes hormones that maintain proper
kidney function and repair the stomach lining.
Wavelength is the
A. number of waves passing a fixed point in one second.
B. height of the wave.
C. distance between successive peaks in a wave.
D. distance between a peak of one wave and the next trough.
Which fact is not important when drawing conclusions from C-14 dating?
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A. Living organisms exchange carbon with the atmosphere.
B. C-14 has a half-life of 5,715 years.
C. Dead organisms do not exchange carbon with the atmosphere.
D. C-14 emits beta particles.
When table sugar (sucrose, C12H22O11) dissolves in water, which type(s) of attraction
between water and sugar molecules occur(s)?
I. hydrogen bonding
II. polar-polar interactions
III. covalent bonding
A. I and II only
B. II and III only
C. I and III only
D. I, II, and III
Which naturally occurring radioactive particles are the largest?
A. alpha particles
B. beta particles
C. gamma radiation
D. neutrons
Which if the following is the chemical symbol for silver?
A. Au
B. Pb
C. Ag
D. Fe
Among the design goals for transgenic plants are to
I. reduce the environmental impacts of intensive and extensive agriculture.
II. give nutritional benefits to the consumer.
III. increase the availability of pharmaceuticals and vaccines.
IV. improve crop yields in harsh environments.
A. I and III only
B. II and IV only
C. I and IV only
D. I, II, III, and IV
A polymer is a large molecule
A. made up of long chains of atoms held together by hydrogen bonds.
B. made up of long chains of atoms covalently bonded together.
C. made up of a large lattice structure held together by ionic bonds.
D. always made up of identical monomer units.
Whenever a substance is oxidized,
A. it is called the oxidizing agent.
B. some other substance must be reduced.
C. it gains electrons.
D. hydronium ions are produced.
The morning newspaper reports a UV Index Forecast of 6.5. What precautions, if any
should a fair skinned person take?
A. None.
B. Only sunglasses and maybe a hat is enough.
C. Reduce exposure between 10 a.m. and 4 p.m. in addition to SPF 15+ sunscreen.
D. All precautions must be taken; this is an extreme UV day.
Which component of the air makes up approximately 100 times more of an exhaled
breath than of an inhaled breath?
A. Ar
B. O2
C. O3
D. CO2
To date, solar radiation is not a practical source for the production of electricity used to
power
A. electric highway signs.
B. security lighting in parking lots.
C. satellites in orbit around the earth.
D. fleets of taxis.
Which is a correct statement of the second law of thermodynamics?
A. Entropy of the universe is constantly increasing.
B. Nature allows the conversion of potential energy into kinetic energy, but not vice
versa.
C. Heat is the only form of energy that can be converted into work with 100%
efficiency.
D. Energy cannot be created or destroyed, but it can change form.
Which of the following fission products released from the Chernobyl reactor is
dangerous because it concentrates in bones?
A. I-131
B. Sr-90
C. C-14
D. U-238
The measure of how much energy is dispersed in a given processis called the
A. entropy.
B. activation energy.
C. heat of combustion.
D. potential energy.
If the average temperature of earth is currently 15.0C, what does the NOAA model (the
line in the graph) predict for the average global temperature in 2080?
A. 2.4C
B. 12.6C
C. 15.0C
D. 17.4C
Which of the following are methods of making sea water appropriate for drinking?
____Osmosis
____Reverse osmosis
____Distillation
____Flocculation
Which of the following are methods of making sea water appropriate for drinking?
____Osmosis
____Reverse osmosis
____Distillation
____Flocculation
Which of the following are examples of technological advances that have reduced air
pollution?
Which of the following are examples of technological advances that have reduced air
pollution?
__ Paint with reduced VOCs
__ Catalytic converters
__ Burning gasoline in leaf blowers
__ Low sulfur Diesel fuels