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WorksheetsCombustion Mock Quiz
Total questions: 15
Worksheet time: 8mins
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
What is the air-gas ratio for Propane?
9.8 : 1
23.8 : 1
30.9 : 1
5 : 1
Which gas has a specific gravity of 2 compared to air?
Natural Gas
Propane
Butane
Air
To achieve complete combustion, approximately how much air is required to burn 1m³ of natural gas?
5m³
10m³
15m³
20m³
How much oxygen is present in air?
21%
50%
78%
100%
What is the air-gas ratio for the complete combustion of propane?
20.5 : 1
21.5 : 1
22.8 : 1
23.8 : 1
