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CDI-5
Contributed by: delos santos
  • 1. The Fire Triangle illustrates that fire cannot exist without all three elements. Which combination correctly represents the Fire Triangle?
A) Oxygen, Flame, Ignition
B) Heat, Smoke, Flame
C) Fuel, Oxygen, Heat
D) Fuel, Oxygen, Chemical Chain Reaction
  • 2. The Fire Tetrahedron adds one more element to the Fire Triangle. What does this additional element represent?
A) Chemical chain reaction
B) Fuel expansion
C) Heat radiation
D) Smoke production
  • 3. Which of the following BEST describes “products of combustion”?
A) Substances produced as a result of burning
B) Materials used to ignite fire
C) Materials that resist burning
D) Chemicals used to extinguish fire
  • 4. Smoke, heat, and toxic gases released during burning are examples of:
A) Combustion by-products
B) Fire hazards
C) Fire extinguishing agents
D) Thermal energy
  • 5. Friction, electricity, and chemical reaction are examples of what?
A) Flame types
B) Forms of oxygen
C) Products of fire spread
D) Sources of heat energy
  • 6. Which source of heat energy occurs when two objects rub together and produce heat?
A) Solar heat
B) Electrical heat
C) Mechanical heat
D) Chemical heat
  • 7. Heat transfer by direct physical contact between molecules is known as:
A) Radiation
B) Convection
C) Conduction
D) Expansion
  • 8. Which method of heat transfer is responsible for the upward movement of hot gases and smoke during a fire?
A) Radiation
B) Conduction
C) Reflection
D) Convection
  • 9. During which stage of fire development does the fire rapidly grow and heat build up, eventually leading to possible flashover?
A) Fully developed stage
B) Growth stage
C) Decay stage
D) Incipient stage
  • 10. The final stage of fire development, characterized by a drop in fuel or oxygen and reduced flame activity, is the:
A) Fully developed stage
B) Decay stage
C) Growth stage
D) Ignition stage
  • 11. A kitchen fire starts when oil on a pan overheats and ignites. Which element of the Fire Triangle was the FIRST to increase, causing the ignition?
A) Chemical chain reaction
B) Heat
C) Fuel
D) Oxygen
  • 12. A firefighter removes burning materials from a room to stop the fire from spreading. Which part of the Fire Triangle is being eliminated?
A) Chemical chain reaction
B) Fuel
C) Heat
D) Oxygen
  • 13. When a chemical fire continues to burn even after removing heat and fuel, which element of the Fire Tetrahedron is sustaining the fire?
A) Carbon dioxide
B) Oxygen
C) Chemical chain reaction
D) Water vapor
  • 14. firefighter enters a smoke-filled room and notices reduced visibility and strong toxic fumes. Which product of combustion is causing the MOST danger in this scenario?
A) Steam
B) Toxic gases
C) Light
D) Heat
  • 15. A wooden building ignites due to a lightning strike during a storm. Which source of heat energy triggered the fire?
A) Solar heat
B) Chemical heat
C) Mechanical heat
D) Electrical heat
  • 16. A steel beam heats up because it is directly touching a burning wooden wall. Which method of heat transfer is responsible?
A) Convection
B) Conduction
C) Reflection
D) Radiation
  • 17. Thick, black smoke rapidly fills the upper portion of a room and begins to push downward as temperature rises. Which method of heat transfer explains this movement?
A) Convection
B) Refractive heating
C) Radiation
D) Conduction
  • 18. A fire investigator concludes that sunlight passing through a broken glass window concentrated heat onto a rug, causing ignition. Which heat source is being applied here?
A) Electrical
B) Solar
C) Chemical
D) Mechanical
  • 19. A fire suddenly engulfs an entire room after heat builds up and gases reach ignition temperature. Which stage of fire development is demonstrated?
A) Incipient
B) Fully developed
C) Growth
D) Flashover leading to fully developed stage
  • 20. After firefighters knock down most of the flames, the fire weakens because combustible materials are consumed. Which stage of fire development is the fire entering?
A) Fully developed stage
B) Growth stage
C) Incipient stage
D) Decay stage
  • 21. A Class A fire involves which type of material?
A) Flammable liquids
B) Combustible metals
C) Electrical equipment
D) Ordinary combustibles like wood and cloth
  • 22. A fire involving gasoline and oil is classified as:
A) Class C
B) Class D
C) Class B
D) Class A
  • 23. What type of fire extinguisher is MOST appropriate for an electrical fire?
A) CO₂ or dry chemical extinguisher
B) Water extinguisher
C) Foam extinguisher
D) Wet chemical extinguisher
  • 24. Which fire extinguishing method works by lowering the temperature below ignition point?
A) Smothering
B) Starvation
C) Inhibiting chemical chain reaction
D) Cooling
  • 25. Removing combustible materials from a burning area is an example of which extinguishing method?
A) Cooling
B) Starvation
C) Smothering
D) Chemical inhibition
  • 26. The BEST method to extinguish a Class K (kitchen) fire caused by hot cooking oil is:
A) Use a CO₂ extinguisher
B) Smother with a lid or use wet chemical extinguisher
C) Lower the room temperature
D) Pour water directly
  • 27. Fire prevention primarily focuses on:
A) Educating the public and eliminating hazards before ignition
B) Investigating causes of existing fires
C) Suppressing flames as quickly as possible
D) Responding to fires that have already started
  • 28. Fire suppression refers to:
A) Controlling and extinguishing active fires
B) Training firefighters
C) Stopping fires from starting
D) Investigating the fire’s cause
  • 29. Which phase of firefighting includes exposure protection and preventing the fire from spreading?
A) Mop-up phase
B) Overhaul phase
C) Confinement phase
D) Rescue phase
  • 30. After the main fire is extinguished, firefighters check for hidden embers and remaining hotspots. This activity is part of the:
A) Size-up phase
B) Initial attack phase
C) Rescue phase
D) Overhaul phase
  • 31. Which fire class involves combustible solids like wood, cloth, and paper?
A) Class C
B) Class B
C) Class D
D) Class A
  • 32. What is the most appropriate extinguishing method for Class A fires?
A) Using CO₂
B) Smothering with foam
C) Cooling with water
D) Using dry powder
  • 33. Which fire class involves flammable liquids such as gasoline, oil, or paint?
A) Class B
B) Class C
C) Class K
D) Class D
  • 34. Which extinguishing agent is recommended for electrical (Class C) fires?
A) Sand
B) Wet chemical agent
C) CO₂ or dry chemical powder
D) Water extinguisher
  • 35. Which method of extinguishing fire works by removing oxygen from the fire triangle?
A) Radiation
B) Smothering
C) Cooling
D) Starvation
  • 36. Which of the following is the BEST example of fire prevention?
A) Removing burning materials
B) Performing regular maintenance on electrical systems
C) Closing doors to slow fire spread
D) Using foam to stop fire growth
  • 37. What is the FIRST phase of firefighting?
A) Overhaul
B) Salvage
C) Size-up
D) Suppression
  • 38. During which phase of firefighting do firefighters primarily work to extinguish the fire and stop its spread?
A) Control
B) Overhaul
C) Suppression
D) Salvage
  • 39. The phase in which firefighters search for hidden embers and prevent rekindling is called:
A) Overhaul
B) Control
C) Size-up
D) Salvage
  • 40. Which action is part of fire control rather than fire prevention?
A) Confine the fire to its area of origin
B) Properly storing flammable liquids
C) Installing smoke detectors
D) Educating the public about fire hazards
  • 41. Which of the following is an example of active fire protection?
A) Fire doors
B) Fire-resistant walls
C) Fire sprinkler system
D) Fire-stopping materials
  • 42. Which device detects smoke particles in the air using a light beam?
A) Ionization detector
B) Photoelectric smoke detector
C) CO detector
D) Heat detector
  • 43. Which of the following is considered passive fire protection?
A) Automatic sprinklers
B) Fire-rated walls and ceilings
C) Fire extinguishers
D) Fire alarm systems
  • 44. What type of detector activates when the temperature reaches a set level?
A) Carbon monoxide detector
B) Smoke detector
C) Heat detector
D) Flame detector
  • 45. Which fire suppression system uses water as its primary extinguishing agent?
A) Water sprinkler system
B) FM-200 system
C) Dry chemical system
D) CO₂ system
  • 46. Which component alerts building occupants during a fire emergency?
A) Alarm sounder or bell
B) Control panel
C) Heat detector
D) Manual pull station
  • 47. The main function of a flame detector is to detect:
A) Visible or infrared light from flames
B) Smoke particles
C) Carbon monoxide levels
D) Rising temperature
  • 48. Which system must be manually activated by a person?
A) Smoke detector
B) Fire pump
C) Manual pull station
D) Automatic sprinkler
  • 49. Fire doors are classified as what type of fire protection?
A) Detection system
B) Special protection
C) Active
D) Passive
  • 50. Which fire suppression agent is best for protecting sensitive electronic equipment?
A) FM-200
B) Water
C) Sand
D) CO₂
  • 51. Which device sends signals to the fire alarm control panel once smoke or heat is detected?
A) Automatic detector
B) Fire hose reel
C) Fire vent
D) Sprinkler head
  • 52. A fire alarm control panel is considered:
A) System control center
B) Notification appliance
C) Detection equipment
D) Passive fire component
  • 53. Which of the following is not an active fire protection system?
A) Fire hose reel
B) Fire-resistant flooring
C) Fire alarm
D) Smoke detector
  • 54. Which type of suppression system releases fine mist to cool and smother the fire?
A) CO₂ system
B) Dry chemical system
C) Wet pipe sprinkler
D) Water mist system
  • 55. The purpose of passive fire protection is to:
A) Suppress fire automatically
B) Notify building occupants
C) Contain fire and prevent spread
D) Detect fire early
  • 56. Which system activates only after a sprinkler head’s glass bulb bursts?
A) Wet pipe sprinkler system
B) Dry pipe system
C) CO₂ flooding system
D) Deluge system
  • 57. What component is used to manually signal a fire emergency?
A) Fire extinguisher bracket
B) Fire damper
C) Smoke barrier
D) Manual call point
  • 58. Fire dampers installed in air ducts are an example of:
A) Passive fire protection
B) Active fire detection
C) Active suppression
D) Alarm notification
  • 59. A device that sounds an alarm when smoke levels exceed a threshold is a:
A) Ventilation damper
B) Fire hydrant
C) Fire hose
D) Smoke detector
  • 60. Which equipment actively releases an extinguishing agent to control fire?
A) Fire-resistant walls
B) Fire-rated doors
C) Fire sprinkler
D) Fire partitions
  • 61. Which law governs the penal provisions for arson that replaced Article 320 of the Revised Penal Code?
A) PD 1602
B) PD 1613
C) RA 9851
D) RA 9262
  • 62. Under PD 1613, which is considered simple arson?
A) Burning a school building
B) Burning a warehouse used as storage for goods
C) Burning a government office
D) Burning an inhabited house
  • 63. Which of the following constitutes destructive arson under PD 1613?
A) Burning a public building or government-owned structure
B) Burning an uninhabited hut
C) Burning a pile of garbage
D) Burning one’s own belongings inside a private room
  • 64. What is the essential element of arson under PD 1613?
A) The fire was caused by accident
B) Burning occurred due to natural causes
C) The property is damaged due to negligence
D) Intentional and malicious burning of property
  • 65. Under PD 1613, which of the following acts does NOT constitute arson?
A) Setting fire to a building used for business
B) Burning grass in an empty lot accidentally
C) Deliberately burning crops belonging to another
D) Burning a neighbor’s vehicle out of revenge
  • 66. What is the penalty for destructive arson under PD 1613?
A) Arresto mayor
B) Reclusion temporal
C) Fine only
D) Reclusion perpetua to death
  • 67. Which scenario qualifies as arson “committed by means of explosion” under PD 1613?
A) A person accidentally drops gasoline near a flame
B) A person uses a bomb to set a building on fire
C) A fire starts because of faulty electrical wiring
D) Fire spreads naturally due to strong wind
  • 68. Under PD 1613, burning a building that is inhabited or used as a dwelling is classified as:
A) Accidental burning
B) Destructive arson
C) Simple arson
D) Negligent arson
  • 69. Which act constitutes attempted arson under PD 1613?
A) The suspect lights a match and places it on property but fire fails to spread
B) The suspect prepares gasoline but takes no action
C) The suspect reports a fake fire
D) The suspect successfully burns a house
  • 70. Under PD 1613, which is a qualifying circumstance that increases criminal liability for arson?
A) Arson committed on an empty field
B) Arson committed to conceal another crime
C) Arson committed accidentally
D) Fire caused by lightning
  • 71. A man intentionally burns his own warehouse to collect insurance. The fire spreads and destroys his neighbor’s store. What crime is he liable for under PD 1613?
A) Destructive arson
B) Simple arson
C) Arson with intent to defraud
D) No crime, since it was his own property
  • 72. A tenant sets fire to the apartment unit he is renting due to anger at the landlord. The apartment contains multiple dwellers. What type of arson applies?
A) Attempted arson
B) Simple arson
C) Destructive arson
D) Accidental arson
  • 73. A farmer burns his own rice field intentionally. The act is contained to his property only. What crime, if any, did he commit?
A) Simple arson
B) No arson
C) Destructive arson
D) Malicious mischief
  • 74. A person pours gasoline on a neighbor’s car and lights it on fire. The car is parked in an open garage attached to the house. What is the most appropriate classification?
A) Destructive arson
B) Simple arson
C) Attempted arson
D) Malicious burning
  • 75. A suspect lights a cloth soaked in gasoline and places it inside a store at night, but the fire dies out before spreading. What crime is committed?
A) Attempted arson
B) Destructive arson
C) Simple arson
D) No crime
  • 76. A student accidentally knocks over a candle that burns part of a classroom wall. What crime applies under PD 1613?
A) Simple arson
B) Reckless imprudence resulting in damage
C) Accidental fire (no arson)
D) Destructive arson
  • 77. A man burns a public market stall to destroy evidence after stealing valuables. Which qualifies this act under PD 1613?
A) Accidental burning
B) Destructive arson
C) Simple arson
D) Arson with a qualifying circumstance
  • 78. A factory owner purposely sets fire to a storage building containing toxic chemicals, causing danger to nearby residents. How is this classified?
A) Malicious mischief
B) Simple arson
C) Attempted arson
D) Destructive arson
  • 79. A child throws a lit match inside an uninhabited abandoned house as a prank, causing it to burn down. What is the legal implication?
A) Attempted arson
B) Simple arson because the structure is not inhabited
C) Destructive arson
D) No arson since the building is abandoned
  • 80. A person sets fire to a church using gasoline. No one is inside, but the building is severely damaged. How is this evaluated under PD 1613?
A) Accidental arson
B) Destructive arson
C) Simple arson
D) Attempted arson
  • 81. When arriving at a fire scene, what is the first step in evaluating it?
A) Interview witnesses before observing the scene
B) Conduct a systematic scene survey
C) Start extinguishing the fire immediately
D) Remove debris to access the fire origin
  • 82. A char pattern on a wooden floor forms a V-shape pointing toward a wall. What does this indicate?
A) Fire originated near the wall
B) Fire was caused by electrical fault
C) Fire started on the ceiling
D) Fire moved randomly
  • 83. Deep charring on the floor and furniture in one room suggests what about the fire?
A) The fire burned slowly
B) That room is likely the point of origin
C) The fire started elsewhere
D) The fire was electrical
  • 84. Which type of evidence is MOST important for determining the cause of a fire?
A) Burn patterns
B) Firefighter reports only
C) Witness statements only
D) Newspaper articles
  • 85. A room shows heavy charring near an outlet. What is the likely cause of fire?
A) Electrical malfunction
B) Lightning strike
C) Arson
D) Cooking accident
  • 86. If multiple small V-shaped patterns are found pointing toward one spot on the floor, this usually indicates:
A) Fire started from multiple points (possible arson)
B) Fire was accidental
C) Fire started from a single point
D) Fire moved randomly
  • 87. Heavy smoke staining on walls near the ceiling helps investigators determine:
A) The exact cause of the fire
B) Who caused the fire
C) The spread and direction of fire
D) The time the fire started
  • 88. Alligatoring of wood surfaces (cracks in char resembling alligator skin) indicates:
A) Water was applied early
B) Fire was caused by chemicals
C) The intensity and duration of burning
D) Fire started recently
  • 89. Which observation suggests the fire may have been intentionally set?
A) Single area of deep charring
B) Multiple points of origin
C) Uniform burn throughout the room
D) Fire confined to kitchen appliances
  • 90. Burn patterns that show “inverted cones” or holes in the ceiling usually indicate:
A) Fire was electrical
B) Fire involved accelerants
C) Fire started on the floor
D) Fire burned slowly
  • 91. At a fire scene, investigators notice that a single room is almost completely charred while adjacent rooms are lightly damaged. What does this suggest?
A) The fire was accidental
B) The heavily charred room is likely the point of origin
C) The fire started on the roof
D) The fire originated in the adjacent rooms
  • 92. A V-shaped burn pattern on a wooden wall points toward a corner. What can be inferred?
A) Fire moved away from the corner
B) Fire originated on the ceiling
C) Fire likely originated at that corner
D) Fire was caused by natural causes
  • 93. Investigators find multiple deep charring points in different areas of a room. What conclusion is most reasonable?
A) Fire was caused by faulty ventilation
B) Fire may have been intentionally set (possible arson)
C) Fire started accidentally from one source
D) Fire was caused by lightning
  • 94. Heavy smoke staining is observed on the upper walls and ceiling. What information does this provide?
A) The fire started low and spread upwards
B) The fire started at ceiling level
C) The fire was caused by an electrical fault
D) The fire was intentionally set
  • 95. Alligatoring of wooden surfaces is present in the room. What does this indicate?
A) Fire was intense and lasted a significant duration
B) Fire was brief and low intensity
C) Fire involved water accelerants
D) Fire was accidental
  • 96. A kitchen shows charring confined only to the stove area with minimal damage elsewhere. What is the most likely cause?
A) Lightning strike
B) Cooking accident
C) Electrical fire
D) Arson
  • 97. Inverted cone burn patterns are observed on the floor and walls. What does this suggest about the fire?
A) Accelerants were likely used
B) Fire was caused by electrical short circuit
C) Fire started in the ceiling
D) Fire was caused by a natural source
  • 98. Investigators note a burn pattern that moves from a lower corner to the ceiling in a distinct path. What can be inferred?
A) Fire started at the lower corner and spread upward
B) Fire originated on the ceiling
C) Fire was intentionally started on the roof
D) Fire was accidental
  • 99. A garage has several burn patterns concentrated near stored gasoline cans. What is the likely cause of fire?
A) Lightning strike
B) Spontaneous combustion
C) Fire ignited using accelerants
D) Electrical malfunction
  • 100. Multiple rooms show similar V-shaped burn patterns pointing toward a central point. What does this suggest about the fire scene?
A) Fire was accidental
B) Central point may indicate multiple ignition sources (possible arson)
C) Fire spread from the ceiling
D) Fire started outside the building
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