TSSA G3 FINAL EXAM ASSESSMENT
TEST BANK 300 QUESTIONS &
DETAILED ANSWERS (WELL VERIFIED)
What is the ignition temperature of propane gas compared to natural gas? - ANSWER-
Lower for propane
What is the ignition temperature of propane gas? - ANSWER-920 to 1020 F
Is natural gas heavier or lighter than air? - ANSWER-lighter
Is propane heavier or lighter than air? - ANSWER-heavier
One imperial gallon of propane weighs: - ANSWER-5.1 pounds (2.3 kilograms)
At 60°F (15,5° C) a pound of propane produces how many cubic feet of gas? -
ANSWER-8.50
Propane shall have a distinctive odour content to ensure it is readily detectable in the
atmosphere down to concentrations of: - ANSWER-20% of the lower explosive limit.
When one pound of propane burns, it releases approximately: - ANSWER-21,600 Btu
The relative density of liquid propane as compared to water is approximately: -
ANSWER-0.5
Propane is a: - ANSWER-hydrocarbon
As the temperature of liquid propane in a tank increases, the vapour pressure of the
propane: - ANSWER-increases
One boiler horsepower is approximately: - ANSWER-34.000 Btuh (10 kW)
The "specific gravity of a gas (vapour)" is: - ANSWER-the weight of the gas as
compared to the weight of an equal volume of air
Name the three elements required for combustion of any fuel? - ANSWER-Oxygen,
Heat, and Fuel.
What would be the easiest to control or eliminate in a
leak situation (before a fire occurs) - ANSWER-Shutting off the fuel
,The products of perfect combustion of natural gas or propane with oxygen are: -
ANSWER-water vapour, carbon dioxide, heat, and light
What air to gas ratio is required for the complete combustion of natural gas? -
ANSWER-10 parts of air to 1 part of gas
What air to gas ratio is required for the complete combustion of propane? - ANSWER-
24 parts of air to 1 part of gas
Natural gas and propane are: - ANSWER-members of the hydrocarbon family
Natural gas and propane are composed mainly of: - ANSWER-carbon and hydrogen
What is the odorant added to natural gas and propane? - ANSWER-mercaptan
85% to 95% of natural gas is composed of: - ANSWER-methane
Chemical formula for Methane: - ANSWER-CH4
Chemical formula for Propane: - ANSWER-C3H8
Chemical formula for Oxygen: - ANSWER-O2
Chemical formula for Nitrogen: - ANSWER-N2
Chemical formula for Water: - ANSWER-H2O
Chemical formula for Carbon Dioxide: - ANSWER-CO2
Chemical formula for Carbon Monoxide: - ANSWER-CO
The approximately percentage of oxygen and nitrogen in air is: - ANSWER-21%
Oxygen and 79% Nitrogen
The properties concerning natural gas and propane is on what page of the codebook? -
ANSWER-351
(T/F) Propane liquid escaping from a container rapidly drops in temperature - ANSWER-
True
What is L.E.L.? - ANSWER-The lowest percent of gas in the air-gas mixture that will
support combustion
Odorant is added to natural gas at the: - ANSWER-City gate station
The maximum flame temperature from the combustion of natural gas with air is: -
ANSWER-3500 F
, The two main hydrocarbons which form natural gas are: - ANSWER-methane and
ethane
The boiling point of propane is: - ANSWER--44 F
The boiling point of natural gas is: - ANSWER--260 F
Air that is mixed with fuel prior to ignition is called: - ANSWER-primary air
Air that is mixed with fuel at the point of combustion and around the flame is called: -
ANSWER-secondary air
What is excess air? - ANSWER-Air in the combustion zone in addition to that which is
required for combustion.
A long, yellow flame (or luminous/ carbonizing flame) on an atmospheric burner is
caused by: - ANSWER-not premixing air and fuel prior to combustion
The flue gases from the complete combustion of natural gas in air are primarily: -
ANSWER-Carbon dioxide, water vapour, nitrogen, excess air, heat and light
Name four properties or characteristics of carbon monoxide gas. - ANSWER-
Colourless, Odourless, Tasteless, and Combustible
Name four symptoms of carbon monoxide poisoning. - ANSWER-Dizziness,
Headaches, Shortness of breath, and Nausea/ Vomiting
(T/F) Carbon Monoxide is toxic - ANSWER-True
Two undesirable products of incomplete combustion are: - ANSWER-Carbon monoxide
and aldehydes
What refers to the air found in the products of combustion
after the complete combustion of natural gas or propane? - ANSWER-excess air
Carbon dioxide and nitrogen are: - ANSWER-inert gases
Which one of the following substances is inert and passes through the combustion zone
absorbing heat during the combustion process? - ANSWER-nitrogen
What is the approximate dew point of the water vapour in combustion gases produced
by a property setup appliance? - ANSWER-130 F (54 C)
Carbon monoxide is: - ANSWER-a toxic gas which is combustible
TEST BANK 300 QUESTIONS &
DETAILED ANSWERS (WELL VERIFIED)
What is the ignition temperature of propane gas compared to natural gas? - ANSWER-
Lower for propane
What is the ignition temperature of propane gas? - ANSWER-920 to 1020 F
Is natural gas heavier or lighter than air? - ANSWER-lighter
Is propane heavier or lighter than air? - ANSWER-heavier
One imperial gallon of propane weighs: - ANSWER-5.1 pounds (2.3 kilograms)
At 60°F (15,5° C) a pound of propane produces how many cubic feet of gas? -
ANSWER-8.50
Propane shall have a distinctive odour content to ensure it is readily detectable in the
atmosphere down to concentrations of: - ANSWER-20% of the lower explosive limit.
When one pound of propane burns, it releases approximately: - ANSWER-21,600 Btu
The relative density of liquid propane as compared to water is approximately: -
ANSWER-0.5
Propane is a: - ANSWER-hydrocarbon
As the temperature of liquid propane in a tank increases, the vapour pressure of the
propane: - ANSWER-increases
One boiler horsepower is approximately: - ANSWER-34.000 Btuh (10 kW)
The "specific gravity of a gas (vapour)" is: - ANSWER-the weight of the gas as
compared to the weight of an equal volume of air
Name the three elements required for combustion of any fuel? - ANSWER-Oxygen,
Heat, and Fuel.
What would be the easiest to control or eliminate in a
leak situation (before a fire occurs) - ANSWER-Shutting off the fuel
,The products of perfect combustion of natural gas or propane with oxygen are: -
ANSWER-water vapour, carbon dioxide, heat, and light
What air to gas ratio is required for the complete combustion of natural gas? -
ANSWER-10 parts of air to 1 part of gas
What air to gas ratio is required for the complete combustion of propane? - ANSWER-
24 parts of air to 1 part of gas
Natural gas and propane are: - ANSWER-members of the hydrocarbon family
Natural gas and propane are composed mainly of: - ANSWER-carbon and hydrogen
What is the odorant added to natural gas and propane? - ANSWER-mercaptan
85% to 95% of natural gas is composed of: - ANSWER-methane
Chemical formula for Methane: - ANSWER-CH4
Chemical formula for Propane: - ANSWER-C3H8
Chemical formula for Oxygen: - ANSWER-O2
Chemical formula for Nitrogen: - ANSWER-N2
Chemical formula for Water: - ANSWER-H2O
Chemical formula for Carbon Dioxide: - ANSWER-CO2
Chemical formula for Carbon Monoxide: - ANSWER-CO
The approximately percentage of oxygen and nitrogen in air is: - ANSWER-21%
Oxygen and 79% Nitrogen
The properties concerning natural gas and propane is on what page of the codebook? -
ANSWER-351
(T/F) Propane liquid escaping from a container rapidly drops in temperature - ANSWER-
True
What is L.E.L.? - ANSWER-The lowest percent of gas in the air-gas mixture that will
support combustion
Odorant is added to natural gas at the: - ANSWER-City gate station
The maximum flame temperature from the combustion of natural gas with air is: -
ANSWER-3500 F
, The two main hydrocarbons which form natural gas are: - ANSWER-methane and
ethane
The boiling point of propane is: - ANSWER--44 F
The boiling point of natural gas is: - ANSWER--260 F
Air that is mixed with fuel prior to ignition is called: - ANSWER-primary air
Air that is mixed with fuel at the point of combustion and around the flame is called: -
ANSWER-secondary air
What is excess air? - ANSWER-Air in the combustion zone in addition to that which is
required for combustion.
A long, yellow flame (or luminous/ carbonizing flame) on an atmospheric burner is
caused by: - ANSWER-not premixing air and fuel prior to combustion
The flue gases from the complete combustion of natural gas in air are primarily: -
ANSWER-Carbon dioxide, water vapour, nitrogen, excess air, heat and light
Name four properties or characteristics of carbon monoxide gas. - ANSWER-
Colourless, Odourless, Tasteless, and Combustible
Name four symptoms of carbon monoxide poisoning. - ANSWER-Dizziness,
Headaches, Shortness of breath, and Nausea/ Vomiting
(T/F) Carbon Monoxide is toxic - ANSWER-True
Two undesirable products of incomplete combustion are: - ANSWER-Carbon monoxide
and aldehydes
What refers to the air found in the products of combustion
after the complete combustion of natural gas or propane? - ANSWER-excess air
Carbon dioxide and nitrogen are: - ANSWER-inert gases
Which one of the following substances is inert and passes through the combustion zone
absorbing heat during the combustion process? - ANSWER-nitrogen
What is the approximate dew point of the water vapour in combustion gases produced
by a property setup appliance? - ANSWER-130 F (54 C)
Carbon monoxide is: - ANSWER-a toxic gas which is combustible
