NORA Technician Certification: Oil burners,
Heating Oil, and Combustion 2026-2027
Comprehensive Frequently Tested Questions
With Verified Multiple Choice and Conceptual
Actual 100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
1. Heating oil is best defined as:
A. A synthetic fuel made from biomass
B. A hydrocarbon fossil fuel refined from crude oil
C. A renewable liquid fuel
D. A chemical solvent
Correct answer: B
2. #2 fuel oil contains approximately how many BTUs per gallon?
A. 100,000 BTUs
B. 120,000 BTUs
C. 140,000 BTUs
D. 160,000 BTUs
Correct answer: C
3. The flash point of fuel oil is defined as:
,A. The temperature at which fuel ignites continuously
B. The lowest temperature at which fuel vapor flashes but does not continue to
burn
C. The temperature at which fuel flows freely
D. The temperature at which fuel vapor explodes
Correct answer: B
4. The flash point of fuel oil is typically:
A. Below 50°F
B. Between 50°F and 75°F
C. Over 100°F
D. Over 500°F
Correct answer: C
5. The ignition point of fuel oil refers to the:
A. Temperature where fuel begins to flow
B. Lowest temperature where rapid combustion occurs
C. Lowest temperature where fuel flashes briefly
D. Temperature where fuel solidifies
Correct answer: B
6. The ignition point of fuel oil is generally:
A. Over 100°F
B. Over 300°F
C. Over 500°F
D. Over 1,000°F
Correct answer: C
,7. The pour point of fuel oil is the:
A. Temperature at which oil ignites
B. Lowest temperature at which oil will flow
C. Temperature at which sulfur burns
D. Maximum operating temperature
Correct answer: B
8. The pour point of fuel oil can be lowered by:
A. Increasing pump pressure
B. Adding sulfur
C. Blending with kerosene or additives
D. Increasing draft
Correct answer: C
9. Sulfuric acid formation in fuel-oil systems occurs when:
A. Nitrogen reacts with oxygen
B. Sulfur burns and mixes with water
C. Carbon dioxide condenses
D. Oil oxidizes at low temperature
Correct answer: B
10. Tank bottom sediment (sludge) consists of:
A. Pure hydrocarbons only
B. Clean fuel oil
C. A mixture of biological growth, dirt, rust, and acids
D. Water only
Correct answer: C
, 11. Proper fuel-oil tank installation includes locating the tank:
A. Outdoors only
B. Indoors if possible, on a solid base
C. In any available space
D. Above the boiler
Correct answer: B
12. Proper tank installation also requires fill and vent piping to be:
A. Indoors
B. Connected to the burner
C. Piped outdoors
D. Installed underground
Correct answer: C
13. The primary function of a fuel unit (pump) is to:
A. Store fuel oil
B. Lift oil, protect the nozzle, and deliver oil at regulated pressure
C. Control combustion air
D. Vent combustion gases
Correct answer: B
14. Factory pump pressure is typically set at:
A. 50 psi
B. 75 psi
C. 100 psi
D. 150 psi
Correct answer: C
Heating Oil, and Combustion 2026-2027
Comprehensive Frequently Tested Questions
With Verified Multiple Choice and Conceptual
Actual 100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
1. Heating oil is best defined as:
A. A synthetic fuel made from biomass
B. A hydrocarbon fossil fuel refined from crude oil
C. A renewable liquid fuel
D. A chemical solvent
Correct answer: B
2. #2 fuel oil contains approximately how many BTUs per gallon?
A. 100,000 BTUs
B. 120,000 BTUs
C. 140,000 BTUs
D. 160,000 BTUs
Correct answer: C
3. The flash point of fuel oil is defined as:
,A. The temperature at which fuel ignites continuously
B. The lowest temperature at which fuel vapor flashes but does not continue to
burn
C. The temperature at which fuel flows freely
D. The temperature at which fuel vapor explodes
Correct answer: B
4. The flash point of fuel oil is typically:
A. Below 50°F
B. Between 50°F and 75°F
C. Over 100°F
D. Over 500°F
Correct answer: C
5. The ignition point of fuel oil refers to the:
A. Temperature where fuel begins to flow
B. Lowest temperature where rapid combustion occurs
C. Lowest temperature where fuel flashes briefly
D. Temperature where fuel solidifies
Correct answer: B
6. The ignition point of fuel oil is generally:
A. Over 100°F
B. Over 300°F
C. Over 500°F
D. Over 1,000°F
Correct answer: C
,7. The pour point of fuel oil is the:
A. Temperature at which oil ignites
B. Lowest temperature at which oil will flow
C. Temperature at which sulfur burns
D. Maximum operating temperature
Correct answer: B
8. The pour point of fuel oil can be lowered by:
A. Increasing pump pressure
B. Adding sulfur
C. Blending with kerosene or additives
D. Increasing draft
Correct answer: C
9. Sulfuric acid formation in fuel-oil systems occurs when:
A. Nitrogen reacts with oxygen
B. Sulfur burns and mixes with water
C. Carbon dioxide condenses
D. Oil oxidizes at low temperature
Correct answer: B
10. Tank bottom sediment (sludge) consists of:
A. Pure hydrocarbons only
B. Clean fuel oil
C. A mixture of biological growth, dirt, rust, and acids
D. Water only
Correct answer: C
, 11. Proper fuel-oil tank installation includes locating the tank:
A. Outdoors only
B. Indoors if possible, on a solid base
C. In any available space
D. Above the boiler
Correct answer: B
12. Proper tank installation also requires fill and vent piping to be:
A. Indoors
B. Connected to the burner
C. Piped outdoors
D. Installed underground
Correct answer: C
13. The primary function of a fuel unit (pump) is to:
A. Store fuel oil
B. Lift oil, protect the nozzle, and deliver oil at regulated pressure
C. Control combustion air
D. Vent combustion gases
Correct answer: B
14. Factory pump pressure is typically set at:
A. 50 psi
B. 75 psi
C. 100 psi
D. 150 psi
Correct answer: C
