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Question Bank

Question for AAI Junior Assistant - Quiz / Questions / MCQ in English

Last Update on : October 10, 2026

Duration: 120 · Questions: 100 · Max Marks: 100

View AAI Junior Assistant (Fire Service) 2026 Exam Page

To boost your performance in AAI Junior Assistant exam, practice each question regularly and with focus. Every question tests your subject understanding, so solve them one at a time. Taking a quiz improves your speed and accuracy. Practicing topic-wise MCQs. Students benefit greatly from reviewing questions with answer keys, which help clarify concepts and strengthen Questions knowledge for success in AAI Junior Assistant exams.

Latest AAI Junior Assistant Exam Question (Objective Questions), MCQ in English

Subjects : Technical Subject, General Knowledge, General Intelligence, General Aptitude & English

Question Bank AAI Junior Assistant (Fire Service) Exam - English

Technical Subject

Q 1 :
Which of the following is not a type of fire extinguishing method?
  1. A.Cooling
  2. B.Smothering
  3. C.Starvation
  4. D.Heating
Q 2 :
What is the primary purpose of a fire alarm system?
  1. A.Extinguish fires
  2. B.Detect and alert occupants of fire
  3. C.Prevent fires
  4. D.Suppress smoke
Q 3 :
Class A fires involve which of the following materials?
  1. A.Electrical equipment
  2. B.Flammable liquids
  3. C.Ordinary combustibles
  4. D.Metals
Q 4 :
The Fire Triangle consists of which three elements?
  1. A.Fuel, heat, oxygen
  2. B.Smoke, flame, heat
  3. C.Water, fuel, heat
  4. D.Flame, oxygen, carbon dioxide
Q 5 :
What is the primary function of a fire hydrant?
  1. A.Suppress smoke
  2. B.Provide water supply for firefighting
  3. C.Store extinguishers
  4. D.Detect fire
Q 6 :
Which of the following is considered a Class B fire?
  1. A.Fire involving cooking oils
  2. B.Fire involving flammable liquids
  3. C.Fire involving electrical equipment
  4. D.Fire involving metals
Q 7 :
What is the flashpoint of a substance?
  1. A.The temperature at which it ignites spontaneously
  2. B.The temperature at which it releases enough vapor to ignite
  3. C.The temperature at which it becomes a solid
  4. D.The temperature at which it melts
Q 8 :
Which is the most effective fire suppression system in high-rise buildings?
  1. A.Foam system
  2. B.Sprinkler system
  3. C.Gas suppression system
  4. D.Fire buckets
Q 9 :
What color is the label on a foam fire extinguisher?
  1. A.Red
  2. B.Blue
  3. C.Yellow
  4. D.Cream
Q 10 :
What does the PASS technique stand for in firefighting?
  1. A.Pull, Aim, Squeeze, Sweep
  2. B.Push, Adjust, Spray, Stop
  3. C.Pull, Align, Set, Squeeze
  4. D.Pump, Aim, Sweep, Spray
Q 11 :
What type of fire is a dry powder extinguisher most effective against?
  1. A.Class A fires
  2. B.Class C fires
  3. C.Class D fires
  4. D.Class B fires
Q 12 :
The backdraft phenomenon occurs due to which condition?
  1. A.Excessive oxygen
  2. B.Lack of oxygen and sudden re-introduction of air
  3. C.High water pressure
  4. D.Overuse of extinguishers
Q 13 :
The term "ventilation" in firefighting refers to:
  1. A.Allowing fresh air to reduce smoke
  2. B.Exhausting smoke and heat to improve visibility and reduce danger
  3. C.Cooling hot spots with water spray
  4. D.Using foam to suppress fire
Q 14 :
What is the first step in conducting a risk assessment for fire safety?
  1. A.Identifying fire hazards
  2. B.Installing fire extinguishers
  3. C.Training employees
  4. D.Conducting fire drills
Q 15 :
Which type of hose is typically used in firefighting operations?
  1. A.Garden hose
  2. B.Booster hose
  3. C.Lay-flat hose
  4. D.Suction hose
Q 16 :
A thermal imaging camera helps firefighters to:
  1. A.Extinguish flames faster
  2. B.Locate trapped victims and hot spots
  3. C.Reduce water usage
  4. D.Increase ventilation efficiency
Q 17 :
What is a "firebreak" used for in wildfire control?
  1. A.A tool to extinguish fires
  2. B.A gap that prevents the spread of fire
  3. C.A type of fire extinguisher
  4. D.A training method
Q 18 :
What is the ideal water pressure for a fire hose?
  1. A.30 psi
  2. B.100 psi
  3. C.150 psi
  4. D.200 psi
Q 19 :
Which is the main element of the fire triangle?
  1. A.Heat
  2. B.Fuel
  3. C.Oxygen
  4. D.All of the above
Q 20 :
What is the flashpoint of a flammable liquid?
  1. A.The temperature at which it ignites spontaneously
  2. B.The temperature at which it produces enough vapor to ignite
  3. C.The boiling point of the liquid
  4. D.The temperature at which it evaporates completely
Q 21 :
What is the primary role of a fire blanket?
  1. A.To extinguish electrical fires
  2. B.To extinguish Class B fires
  3. C.To smother small fires or wrap a person on fire
  4. D.To protect firefighters from smoke inhalation
Q 22 :
What does the acronym PASS stand for in fire extinguisher use?
  1. A.Pull, Aim, Squeeze, Sweep
  2. B.Pull, Align, Spray, Sweep
  3. C.Push, Aim, Squeeze, Sweep
  4. D.Pull, Attack, Spray, Squeeze
Q 23 :
Class B fires are primarily caused by which materials?
  1. A.Flammable liquids like gasoline and oil
  2. B.Electrical equipment
  3. C.Combustible metals
  4. D.Wood and paper
Q 24 :
What color band does a foam fire extinguisher have?
  1. A.Black
  2. B.Blue
  3. C.Cream
  4. D.Red
Q 25 :
What is the principle of cooling in firefighting?
  1. A.Removing fuel from the fire
  2. B.Removing heat from the fire
  3. C.Cutting off oxygen supply
  4. D.Isolating the fire from other combustibles
Q 26 :
A dry chemical extinguisher is used for which classes of fire?
  1. A.Class A only
  2. B.Class A and B only
  3. C.Class A, B, and C
  4. D.Class D only
Q 27 :
What is the minimum number of exits required in a building for fire safety?
  1. A.One
  2. B.Two
  3. C.Three
  4. D.Four
Q 28 :
Which firefighting technique is used to prevent fire spread by removing combustibles?
  1. A.Ventilation
  2. B.Firebreaks
  3. C.Mopping up
  4. D.Dousing
Q 29 :
What is the first step in the event of a fire alarm?
  1. A.Call the fire department
  2. B.Use the fire extinguisher
  3. C.Evacuate the building
  4. D.Investigate the source of fire
Q 30 :
Smoke inhalation can lead to which of the following?
  1. A.Asphyxiation
  2. B.Carbon monoxide poisoning
  3. C.Loss of consciousness
  4. D.All of the above
Q 31 :
What is the primary role of a fire hydrant?
  1. A.To suppress fires in forests
  2. B.To provide water for firefighting
  3. C.To store fire extinguishers
  4. D.To detect smoke
Q 32 :
Which extinguisher type is most suitable for electrical fires?
  1. A.Water extinguisher
  2. B.CO2 extinguisher
  3. C.Foam extinguisher
  4. D.Wet chemical extinguisher
Q 33 :
Which of these is a proper firefighting technique for confined spaces?
  1. A.Use foam spray continuously
  2. B.Apply short, controlled bursts of water mist
  3. C.Always open doors and windows immediately
  4. D.Avoid using CO2 extinguishers
Q 34 :
What is the recommended extinguisher for electrical fires?
  1. A.Water extinguisher
  2. B.Foam extinguisher
  3. C.CO2 extinguisher
  4. D.Wet chemical extinguisher
Q 35 :
Which method is most suitable for extinguishing Class D fires?
  1. A.Water spray
  2. B.Sand or special dry powder
  3. C.CO2 extinguishers
  4. D.Foam extinguishers
Q 36 :
What is the standard temperature at which spontaneous combustion occurs?
  1. A.150°C
  2. B.200°C
  3. C.250°C
  4. D.It varies depending on the material
Q 37 :
What is backdraft in fire situations?
  1. A.A sudden re-ignition of a fire due to oxygen supply
  2. B.A controlled burn used in firefighting
  3. C.A method of ventilation during firefighting
  4. D.A technique to extinguish electrical fires
Q 38 :
Which of the following is an example of a Class A fire?
  1. A.Wood or paper fire
  2. B.Gasoline fire
  3. C.Electrical equipment fire
  4. D.Magnesium fire
Q 39 :
Which fire detection device is most effective for smoldering fires?
  1. A.Heat detectors
  2. B.Smoke detectors
  3. C.Flame detectors
  4. D.Infrared detectors
Q 40 :
What type of sprinkler system is used in areas prone to freezing?
  1. A.Wet pipe system
  2. B.Dry pipe system
  3. C.Deluge system
  4. D.Pre-action system
Q 41 :
What is the primary hazard of carbon monoxide in a fire?
  1. A.It is highly flammable
  2. B.It causes suffocation
  3. C.It is corrosive to materials
  4. D.It reduces visibility
Q 42 :
Which gas is commonly used in inert gas fire suppression systems?
  1. A.Nitrogen
  2. B.Carbon dioxide
  3. C.Argon
  4. D.All of the above
Q 43 :
Which of the following is NOT a method of extinguishing a fire?
  1. A.Starvation
  2. B.Ventilation
  3. C.Smothering
  4. D.Cooling
Q 44 :
What is the main purpose of a fire alarm system?
  1. A.To extinguish fires
  2. B.To alert occupants of a fire
  3. C.To provide water to firefighting systems
  4. D.To control fire spread
Q 45 :
What type of fire extinguisher is labeled with a blue band?
  1. A.Foam
  2. B.Dry powder
  3. C.Carbon dioxide
  4. D.Wet chemical
Q 46 :
What does the term “fire load” refer to?
  1. A.The total weight of the building materials
  2. B.The amount of combustible material in a space
  3. C.The weight of firefighting equipment
  4. D.The maximum temperature a fire can reach
Q 47 :
What is the first step in the firefighting sequence?
  1. A.Select an extinguisher
  2. B.Call for help
  3. C.Remove victims
  4. D.Assess the fire
Q 48 :
What is the role of fire drills in fire safety?
  1. A.To test fire equipment
  2. B.To train occupants on evacuation procedures
  3. C.To identify fire hazards
  4. D.To improve firefighting response time
Q 49 :
What is a fire damper?
  1. A.A device to extinguish fires in ducts
  2. B.A device to prevent smoke from spreading through ducts
  3. C.A fire-resistant wall
  4. D.A type of fire door
Q 50 :
Which extinguishing agent is most effective for grease fires in kitchens?
  1. A.Water
  2. B.Dry powder
  3. C.Wet chemical
  4. D.Carbon dioxide

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