Environmentaleasy · Past Paper
Which of the following fuels is the cleanest in terms of air pollution?
ACoal
BDiesel
CNatural Gas (CNG)
DFirewood
✓ Correct Answer: C — Natural Gas (CNG)
CNG (Compressed Natural Gas) produces much lower amounts of harmful emissions compared to petrol, diesel, or coal.
Share this question
More from Environmental
- The 'Walker Circulation' is most closely associated with which climate event?
- Which type of clouds are often associated with 'Polar Stratospheric Clouds' (PSCs) that aid ozone depletion?
- Which process removes carbon dioxide from the atmosphere?
- Which of these is a secondary pollutant?
- What is the primary pollutant in 'Photochemical Smog' that causes eye irritation?