Combustion Mock Quiz

What are the three elements required to create combustion?

• Oxygen, Fuel, Water

• Oxygen, Fuel, Ignition

• Fuel, Water, Ignition

• Oxygen, Water, Ignition

What is the ignition temperature of natural gas?

• 500°C

• 704°C

• 800°C

• 600°C

Which process uses more air, complete or incomplete combustion?

• Complete combustion

• Incomplete combustion

• Both use the same amount

• Neither uses air

What is the chemical symbol for oxygen?

• O

• O2

• O3

• O4

What is the role of nitrogen in air ?

• Supports combustion

• Inert and does not affect combustion

• Cools the air

• Increases flame temperature

What is the percentage of nitrogen in natural gas?

• 90%

• 5.3%

• 2.7%

• 1%

Which gas in natural gas has the chemical symbol CO2?

• Methane

• Carbon dioxide

• Butane

• Ethane

What percentage of natural gas is butane?

• 0.4%

• 0.6%

• 1%

• 5.3%

What is the main characteristic of natural gas according to the GSIUR?

• It is mainly composed of ethane.

• It is mainly composed of methane.

• It is mainly composed of nitrogen.

• It is mainly composed of propane.

What is the specific gravity of Natural Gas compared to air?

• 0.58

• 1.5

• 2

• 1