BOILER SYSTEMS QUALIFICATION EXAM
LATEST 2026 VERSION WITH 100 QUESTIONS
AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+||BRAND
NEW VERSION!!
1. What is the main purpose of a boiler in an industrial system?
A. Generate electricity
B. Store water
C. Generate steam or hot water for heating or process use
D. Cool fluids
C. Generate steam or hot water for heating or process use Boilers convert
water into steam or hot water to supply energy for heating or industrial
processes.
2. Which type of boiler uses water-tube construction?
A. Fire-tube boiler
B. Water-tube boiler
C. Cast-iron boiler
D. Electric boiler
B. Water-tube boiler Water flows inside tubes surrounded by hot gases; this
design allows higher pressure and faster steam generation.
3. What is the primary function of a boiler’s safety valve?
A. Regulate fuel supply
B. Prevent overpressure
C. Circulate water
D. Control temperature
, B. Prevent overpressure Safety valves release excess pressure to avoid
boiler explosions.
4. In a fire-tube boiler, where does the hot combustion gas flow?
A. Inside the tubes surrounded by water
B. Outside the tubes surrounding water
C. Only in the chimney
D. Directly into the water
A. Inside the tubes surrounded by water Hot gases pass through tubes,
heating surrounding water to produce steam.
5. What does a boiler economizer do?
A. Reduces fuel efficiency
B. Recovers heat from flue gases to preheat feedwater
C. Increases exhaust temperature
D. Controls boiler pressure
B. Recovers heat from flue gases to preheat feedwater Economizers
improve fuel efficiency by transferring heat from flue gases to incoming
water.
6. What is the function of a boiler deaerator?
A. Increase water pressure
B. Remove dissolved gases from feedwater
C. Burn fuel efficiently
D. Cool the boiler
B. Remove dissolved gases from feedwater Dissolved oxygen and CO₂ can
cause corrosion; deaerators remove them before water enters the boiler.
7. Which of the following is a common boiler feedwater treatment chemical?
A. Sodium chloride
B. Oxygen
C. Sodium carbonate
D. Chlorine
C. Sodium carbonate Sodium carbonate (soda ash) is used to reduce water
hardness and prevent scale formation.
, 8. What is the purpose of a steam drum in a water-tube boiler?
A. Burn fuel
B. Separate steam from water
C. Store fuel
D. Measure pressure
B. Separate steam from water The steam drum collects water-steam
mixture and allows steam to rise while returning water to the system.
9. Which device measures boiler water pressure?
A. Thermometer
B. Pressure gauge
C. Flow meter
D. Level gauge
B. Pressure gauge Pressure gauges indicate the internal pressure to ensure
safe operation.
10.What is “priming” in a boiler?
A. Overheating of the boiler shell
B. Carryover of water droplets with steam
C. Starting the burner
D. Cleaning the tubes
B. Carryover of water droplets with steam Priming occurs when water is
carried with steam, potentially causing damage to downstream equipment.
11.What is the function of a boiler burner?
A. Circulate water
B. Mix fuel and air and ignite combustion
C. Control pressure
D. Remove sludge
B. Mix fuel and air and ignite combustion Burners ensure proper
combustion for heat generation.
12.Which fuel is commonly used in industrial boilers?
A. Gas, oil, or coal
B. Wood only
LATEST 2026 VERSION WITH 100 QUESTIONS
AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+||BRAND
NEW VERSION!!
1. What is the main purpose of a boiler in an industrial system?
A. Generate electricity
B. Store water
C. Generate steam or hot water for heating or process use
D. Cool fluids
C. Generate steam or hot water for heating or process use Boilers convert
water into steam or hot water to supply energy for heating or industrial
processes.
2. Which type of boiler uses water-tube construction?
A. Fire-tube boiler
B. Water-tube boiler
C. Cast-iron boiler
D. Electric boiler
B. Water-tube boiler Water flows inside tubes surrounded by hot gases; this
design allows higher pressure and faster steam generation.
3. What is the primary function of a boiler’s safety valve?
A. Regulate fuel supply
B. Prevent overpressure
C. Circulate water
D. Control temperature
, B. Prevent overpressure Safety valves release excess pressure to avoid
boiler explosions.
4. In a fire-tube boiler, where does the hot combustion gas flow?
A. Inside the tubes surrounded by water
B. Outside the tubes surrounding water
C. Only in the chimney
D. Directly into the water
A. Inside the tubes surrounded by water Hot gases pass through tubes,
heating surrounding water to produce steam.
5. What does a boiler economizer do?
A. Reduces fuel efficiency
B. Recovers heat from flue gases to preheat feedwater
C. Increases exhaust temperature
D. Controls boiler pressure
B. Recovers heat from flue gases to preheat feedwater Economizers
improve fuel efficiency by transferring heat from flue gases to incoming
water.
6. What is the function of a boiler deaerator?
A. Increase water pressure
B. Remove dissolved gases from feedwater
C. Burn fuel efficiently
D. Cool the boiler
B. Remove dissolved gases from feedwater Dissolved oxygen and CO₂ can
cause corrosion; deaerators remove them before water enters the boiler.
7. Which of the following is a common boiler feedwater treatment chemical?
A. Sodium chloride
B. Oxygen
C. Sodium carbonate
D. Chlorine
C. Sodium carbonate Sodium carbonate (soda ash) is used to reduce water
hardness and prevent scale formation.
, 8. What is the purpose of a steam drum in a water-tube boiler?
A. Burn fuel
B. Separate steam from water
C. Store fuel
D. Measure pressure
B. Separate steam from water The steam drum collects water-steam
mixture and allows steam to rise while returning water to the system.
9. Which device measures boiler water pressure?
A. Thermometer
B. Pressure gauge
C. Flow meter
D. Level gauge
B. Pressure gauge Pressure gauges indicate the internal pressure to ensure
safe operation.
10.What is “priming” in a boiler?
A. Overheating of the boiler shell
B. Carryover of water droplets with steam
C. Starting the burner
D. Cleaning the tubes
B. Carryover of water droplets with steam Priming occurs when water is
carried with steam, potentially causing damage to downstream equipment.
11.What is the function of a boiler burner?
A. Circulate water
B. Mix fuel and air and ignite combustion
C. Control pressure
D. Remove sludge
B. Mix fuel and air and ignite combustion Burners ensure proper
combustion for heat generation.
12.Which fuel is commonly used in industrial boilers?
A. Gas, oil, or coal
B. Wood only
