Practice Quiz

Praxis II: Chemistry Exam Prep - Question List

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76.
Which of the following correctly identifies both an advantage and a disadvantage of using nuclear fission as a method of generating electricity?
  1. Advantage: produces only nonhazardous waste products Disadvantage: leads to thermal pollution of rivers.
  2. Advantage: uses an unlimited inexpensive fuel source Disadvantage: accelerates the rate of ozone depletion.
  3. Advantage: produces minimal greenhouse gases Disadvantage: requires long-term storage of radioactive waste.
  4. Advantage: inhibits the formation of acid rain Disadvantage: presents problems in safely containing plasma.
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77.
Research into the production of ethanol from corn has been promoted by society's need to:
  1. Decrease the price of corn-based food products.
  2. Stimulate job growth in automobile manufacturing.
  3. Decrease dependence on fossil fuels.
  4. Increase the number of small family-owned farms.
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78.
Which of the following responses correctly matches a technological development with its corresponding area of chemistry research?
  1. Computer chips: chemical analysis of DNA.
  2. Pest-resistant corn species: chemical equilibrium.
  3. Photovoltaic cells: electrochemistry.
  4. Synthetic fertilizers: molecular modeling.
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79.
Potassium hydrogen carbonate is best classified as which of the following types of matter?
  1. Heterogeneous mixture
  2. Element
  3. Homogeneous mixture
  4. Compound
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80.
Fog, which is composed of finely divided water droplets dispersed in air, is an example of which of the following types of mixtures?
  1. Solution
  2. Aerosol
  3. Foam
  4. Emulsion
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