Fuel Categories 1

How many categories of fuel are mentioned in the learning material?

• Three

• Four

• Five

• Six

What is added to natural gas prior to distribution to make leaks detectable?

• Color

• Odour

• A special type of gas

• A chemical to make it visible

Why is natural gas considered a widely used fuel?

• It is expensive

• It releases a low amount of energy

• It is a combustible mix of hydrocarbon gases

• It is only found in limited places

What characteristic of natural gas allows it to be burnt for energy?

• It is colorless

• It is odourless

• It releases a high amount of energy

• It is naturally occurring

Where is natural gas often found?

• In the atmosphere

• On the Earth's surface

• Below the Earth's surface

• In the ocean

What is the chemical symbol for Methane?

• C6H6

• CO2

• CH4

• C3H8

What percentage of natural gas is composed of Ethane?

• 0–5%

• 70–90%

• 0–20%

• 0–8%

Which gas has a percentage range of 0–20% in the composition of natural gas?

• Propane

• Butane

• Nitrogen

• Carbon dioxide

What is the specific gravity range of natural gas mentioned in the document?

• 0.6–0.8

• 0.8–1.0

• 0.4–0.6

• 1.0–1.2

Which of the following gases is not listed in the composition of natural gas?

• Oxygen

• Methane

• Hydrogen sulphide

• Nitrogen