Q.1
One of the pollutants from burning fossil fuels is carbon dioxide. To which of the following environmental issues does it contribute?
  • The hole in the ozone layer
  • Acid rain
  • Global dimming
  • Global warming
Q.2
What are biofuels?
  • Fuels made from animals
  • Fuels made only from plants
  • Fuels made from any living thing or its waste
  • Fuels made only from animal dung
Q.3
Why is carbon dioxide from fossil fuels a particular issue?
  • It is slightly radioactive
  • It is more polluting than the carbon dioxide breathed out by animals
  • Plants can't absorb it
  • It was locked away millions of years ago and so is adding to that which is present in the air today
Q.4
Why is burning biofuels less of a problem than burning fossil fuels?
  • They don't produce any CO2 when they burn
  • They are renewable and don't release carbon locked away millions of years ago
  • They are cheaper and easier to produce when compared to fossil fuels
  • All of the above
Q.5
Which one of the following could be an argument against growing plants for biofuels?
  • Farmers would earn more money
  • You need a lot more people to produce biofuels than fossil fuels
  • It could make fuel prices lower
  • It could increase food prices or cause food shortages
Q.6
Which impurity in fuels causes acid rain when it burns?
  • Carbon
  • Hydrogen
  • Soot
  • Sulfur
Q.7
Which of the following is a balanced equation that shows how sulfur dioxide is formed?
  • S + O → SO
  • S + 2O → S2O
  • S + O2 → SO2
  • 2S + O2 → 2SO2
Q.8
Apart from sulfur, what else from burning fuels is a major contributor to acid rain?
  • Carbon monoxide
  • Di-hydrogen oxide
  • Unburnt fuel
  • Nitogen oxides
Q.9
Which of the following might be directly caused by burning fuels?
  • Respiratory system problems
  • Bladder problems
  • Broken bones
  • Indigestion
Q.10
Which of the following products of burning fuels could be responsible for global dimming?
  • Tiny solid particles
  • Water vapour
  • Carbon dioxide
  • Nitrogen oxides
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