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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) Fuel, Oxygen, Heat
C) Heat, Smoke, Flame
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) Smoke production
C) Fuel expansion
D) Heat radiation
  • 3. Which of the following BEST describes “products of combustion”?
A) Chemicals used to extinguish fire
B) Substances produced as a result of burning
C) Materials used to ignite fire
D) Materials that resist burning
  • 4. Smoke, heat, and toxic gases released during burning are examples of:
A) Thermal energy
B) Fire hazards
C) Combustion by-products
D) Fire extinguishing agents
  • 5. Friction, electricity, and chemical reaction are examples of what?
A) Sources of heat energy
B) Products of fire spread
C) Flame types
D) Forms of oxygen
  • 6. Which source of heat energy occurs when two objects rub together and produce heat?
A) Electrical heat
B) Chemical heat
C) Solar heat
D) Mechanical heat
  • 7. Heat transfer by direct physical contact between molecules is known as:
A) Conduction
B) Radiation
C) Expansion
D) Convection
  • 8. Which method of heat transfer is responsible for the upward movement of hot gases and smoke during a fire?
A) Reflection
B) Radiation
C) Conduction
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) Incipient stage
C) Decay stage
D) Growth stage
  • 10. The final stage of fire development, characterized by a drop in fuel or oxygen and reduced flame activity, is the:
A) Ignition stage
B) Growth stage
C) Decay stage
D) Fully developed 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) Heat
B) Chemical chain reaction
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) Oxygen
B) Fuel
C) Heat
D) Chemical chain reaction
  • 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) Water vapor
B) Chemical chain reaction
C) Oxygen
D) Carbon dioxide
  • 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) Toxic gases
B) Steam
C) Heat
D) Light
  • 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) Electrical heat
C) Mechanical heat
D) Chemical heat
  • 16. A steel beam heats up because it is directly touching a burning wooden wall. Which method of heat transfer is responsible?
A) Conduction
B) Convection
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) Refractive heating
B) Radiation
C) Convection
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) Chemical
B) Mechanical
C) Electrical
D) Solar
  • 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) Flashover leading to fully developed stage
C) Growth
D) Fully developed
  • 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) Decay stage
B) Growth stage
C) Fully developed stage
D) Incipient stage
  • 21. A Class A fire involves which type of material?
A) Flammable liquids
B) Ordinary combustibles like wood and cloth
C) Combustible metals
D) Electrical equipment
  • 22. A fire involving gasoline and oil is classified as:
A) Class B
B) Class D
C) Class C
D) Class A
  • 23. What type of fire extinguisher is MOST appropriate for an electrical fire?
A) Wet chemical extinguisher
B) Water extinguisher
C) Foam extinguisher
D) CO₂ or dry chemical extinguisher
  • 24. Which fire extinguishing method works by lowering the temperature below ignition point?
A) Inhibiting chemical chain reaction
B) Smothering
C) Cooling
D) Starvation
  • 25. Removing combustible materials from a burning area is an example of which extinguishing method?
A) Smothering
B) Chemical inhibition
C) Cooling
D) Starvation
  • 26. The BEST method to extinguish a Class K (kitchen) fire caused by hot cooking oil is:
A) Lower the room temperature
B) Use a CO₂ extinguisher
C) Pour water directly
D) Smother with a lid or use wet chemical extinguisher
  • 27. Fire prevention primarily focuses on:
A) Responding to fires that have already started
B) Suppressing flames as quickly as possible
C) Educating the public and eliminating hazards before ignition
D) Investigating causes of existing fires
  • 28. Fire suppression refers to:
A) Controlling and extinguishing active fires
B) Investigating the fire’s cause
C) Stopping fires from starting
D) Training firefighters
  • 29. Which phase of firefighting includes exposure protection and preventing the fire from spreading?
A) Overhaul phase
B) Mop-up phase
C) Rescue phase
D) Confinement phase
  • 30. After the main fire is extinguished, firefighters check for hidden embers and remaining hotspots. This activity is part of the:
A) Initial attack phase
B) Size-up phase
C) Rescue phase
D) Overhaul phase
  • 31. Which fire class involves combustible solids like wood, cloth, and paper?
A) Class D
B) Class B
C) Class A
D) Class C
  • 32. What is the most appropriate extinguishing method for Class A fires?
A) Smothering with foam
B) Using CO₂
C) Using dry powder
D) Cooling with water
  • 33. Which fire class involves flammable liquids such as gasoline, oil, or paint?
A) Class D
B) Class B
C) Class C
D) Class K
  • 34. Which extinguishing agent is recommended for electrical (Class C) fires?
A) Water extinguisher
B) Wet chemical agent
C) CO₂ or dry chemical powder
D) Sand
  • 35. Which method of extinguishing fire works by removing oxygen from the fire triangle?
A) Starvation
B) Smothering
C) Cooling
D) Radiation
  • 36. Which of the following is the BEST example of fire prevention?
A) Closing doors to slow fire spread
B) Performing regular maintenance on electrical systems
C) Removing burning materials
D) Using foam to stop fire growth
  • 37. What is the FIRST phase of firefighting?
A) Suppression
B) Overhaul
C) Salvage
D) Size-up
  • 38. During which phase of firefighting do firefighters primarily work to extinguish the fire and stop its spread?
A) Control
B) Suppression
C) Overhaul
D) Salvage
  • 39. The phase in which firefighters search for hidden embers and prevent rekindling is called:
A) Salvage
B) Overhaul
C) Control
D) Size-up
  • 40. Which action is part of fire control rather than fire prevention?
A) Properly storing flammable liquids
B) Confine the fire to its area of origin
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-stopping materials
B) Fire-resistant walls
C) Fire sprinkler system
D) Fire doors
  • 42. Which device detects smoke particles in the air using a light beam?
A) Heat detector
B) Photoelectric smoke detector
C) Ionization detector
D) CO detector
  • 43. Which of the following is considered passive fire protection?
A) Fire-rated walls and ceilings
B) Fire alarm systems
C) Fire extinguishers
D) Automatic sprinklers
  • 44. What type of detector activates when the temperature reaches a set level?
A) Heat detector
B) Smoke detector
C) Flame detector
D) Carbon monoxide detector
  • 45. Which fire suppression system uses water as its primary extinguishing agent?
A) Water sprinkler system
B) Dry chemical system
C) FM-200 system
D) CO₂ system
  • 46. Which component alerts building occupants during a fire emergency?
A) Control panel
B) Heat detector
C) Manual pull station
D) Alarm sounder or bell
  • 47. The main function of a flame detector is to detect:
A) Rising temperature
B) Visible or infrared light from flames
C) Carbon monoxide levels
D) Smoke particles
  • 48. Which system must be manually activated by a person?
A) Manual pull station
B) Automatic sprinkler
C) Smoke detector
D) Fire pump
  • 49. Fire doors are classified as what type of fire protection?
A) Passive
B) Detection system
C) Active
D) Special protection
  • 50. Which fire suppression agent is best for protecting sensitive electronic equipment?
A) Sand
B) CO₂
C) Water
D) FM-200
  • 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) Sprinkler head
D) Fire vent
  • 52. A fire alarm control panel is considered:
A) Notification appliance
B) Detection equipment
C) Passive fire component
D) System control center
  • 53. Which of the following is not an active fire protection system?
A) Fire hose reel
B) Smoke detector
C) Fire alarm
D) Fire-resistant flooring
  • 54. Which type of suppression system releases fine mist to cool and smother the fire?
A) Dry chemical system
B) Wet pipe sprinkler
C) CO₂ system
D) Water mist system
  • 55. The purpose of passive fire protection is to:
A) Notify building occupants
B) Suppress fire automatically
C) Contain fire and prevent spread
D) Detect fire early
  • 56. Which system activates only after a sprinkler head’s glass bulb bursts?
A) Dry pipe system
B) CO₂ flooding system
C) Wet pipe sprinkler system
D) Deluge system
  • 57. What component is used to manually signal a fire emergency?
A) Fire damper
B) Smoke barrier
C) Fire extinguisher bracket
D) Manual call point
  • 58. Fire dampers installed in air ducts are an example of:
A) Alarm notification
B) Active fire detection
C) Passive fire protection
D) Active suppression
  • 59. A device that sounds an alarm when smoke levels exceed a threshold is a:
A) Ventilation damper
B) Smoke detector
C) Fire hose
D) Fire hydrant
  • 60. Which equipment actively releases an extinguishing agent to control fire?
A) Fire-rated doors
B) Fire partitions
C) Fire-resistant walls
D) Fire sprinkler
  • 61. Which law governs the penal provisions for arson that replaced Article 320 of the Revised Penal Code?
A) PD 1602
B) RA 9262
C) RA 9851
D) PD 1613
  • 62. Under PD 1613, which is considered simple arson?
A) Burning a school building
B) Burning a government office
C) Burning an inhabited house
D) Burning a warehouse used as storage for goods
  • 63. Which of the following constitutes destructive arson under PD 1613?
A) Burning a pile of garbage
B) Burning an uninhabited hut
C) Burning a public building or government-owned structure
D) Burning one’s own belongings inside a private room
  • 64. What is the essential element of arson under PD 1613?
A) The property is damaged due to negligence
B) The fire was caused by accident
C) Burning occurred due to natural causes
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 a neighbor’s vehicle out of revenge
C) Burning grass in an empty lot accidentally
D) Deliberately burning crops belonging to another
  • 66. What is the penalty for destructive arson under PD 1613?
A) Arresto mayor
B) Reclusion temporal
C) Reclusion perpetua to death
D) Fine only
  • 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 fire starts because of faulty electrical wiring
C) Fire spreads naturally due to strong wind
D) A person uses a bomb to set a building on fire
  • 68. Under PD 1613, burning a building that is inhabited or used as a dwelling is classified as:
A) Destructive arson
B) Negligent arson
C) Simple arson
D) Accidental burning
  • 69. Which act constitutes attempted arson under PD 1613?
A) The suspect reports a fake fire
B) The suspect successfully burns a house
C) The suspect prepares gasoline but takes no action
D) The suspect lights a match and places it on property but fire fails to spread
  • 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 accidentally
C) Arson committed to conceal another crime
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) Simple arson
B) Arson with intent to defraud
C) No crime, since it was his own property
D) Destructive arson
  • 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) Destructive arson
B) Accidental arson
C) Simple arson
D) Attempted 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) Malicious mischief
C) Destructive arson
D) No arson
  • 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) Simple arson
B) Attempted arson
C) Destructive 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) No crime
B) Attempted arson
C) Simple arson
D) Destructive arson
  • 76. A student accidentally knocks over a candle that burns part of a classroom wall. What crime applies under PD 1613?
A) Accidental fire (no arson)
B) Destructive arson
C) Simple arson
D) Reckless imprudence resulting in damage
  • 77. A man burns a public market stall to destroy evidence after stealing valuables. Which qualifies this act under PD 1613?
A) Arson with a qualifying circumstance
B) Accidental burning
C) Simple arson
D) Destructive arson
  • 78. A factory owner purposely sets fire to a storage building containing toxic chemicals, causing danger to nearby residents. How is this classified?
A) Destructive arson
B) Attempted arson
C) Malicious mischief
D) Simple 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) No arson since the building is abandoned
C) Simple arson because the structure is not inhabited
D) Destructive arson
  • 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) Simple arson
B) Accidental arson
C) Destructive 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) Remove debris to access the fire origin
C) Conduct a systematic scene survey
D) Start extinguishing the fire immediately
  • 82. A char pattern on a wooden floor forms a V-shape pointing toward a wall. What does this indicate?
A) Fire started on the ceiling
B) Fire originated near the wall
C) Fire was caused by electrical fault
D) Fire moved randomly
  • 83. Deep charring on the floor and furniture in one room suggests what about the fire?
A) That room is likely the point of origin
B) The fire burned slowly
C) The fire was electrical
D) The fire started elsewhere
  • 84. Which type of evidence is MOST important for determining the cause of a fire?
A) Firefighter reports only
B) Newspaper articles
C) Burn patterns
D) Witness statements only
  • 85. A room shows heavy charring near an outlet. What is the likely cause of fire?
A) Arson
B) Cooking accident
C) Electrical malfunction
D) Lightning strike
  • 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 moved randomly
C) Fire started from a single point
D) Fire was accidental
  • 87. Heavy smoke staining on walls near the ceiling helps investigators determine:
A) The spread and direction of fire
B) The time the fire started
C) Who caused the fire
D) The exact cause of the fire
  • 88. Alligatoring of wood surfaces (cracks in char resembling alligator skin) indicates:
A) The intensity and duration of burning
B) Water was applied early
C) Fire started recently
D) Fire was caused by chemicals
  • 89. Which observation suggests the fire may have been intentionally set?
A) Multiple points of origin
B) Single area of deep charring
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 involved accelerants
B) Fire started on the floor
C) Fire was electrical
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 heavily charred room is likely the point of origin
B) The fire started on the roof
C) The fire originated in the adjacent rooms
D) The fire was accidental
  • 92. A V-shaped burn pattern on a wooden wall points toward a corner. What can be inferred?
A) Fire was caused by natural causes
B) Fire originated on the ceiling
C) Fire likely originated at that corner
D) Fire moved away from the corner
  • 93. Investigators find multiple deep charring points in different areas of a room. What conclusion is most reasonable?
A) Fire was caused by lightning
B) Fire may have been intentionally set (possible arson)
C) Fire was caused by faulty ventilation
D) Fire started accidentally from one source
  • 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 was caused by an electrical fault
C) The fire started at ceiling level
D) The fire was intentionally set
  • 95. Alligatoring of wooden surfaces is present in the room. What does this indicate?
A) Fire was accidental
B) Fire involved water accelerants
C) Fire was brief and low intensity
D) Fire was intense and lasted a significant duration
  • 96. A kitchen shows charring confined only to the stove area with minimal damage elsewhere. What is the most likely cause?
A) Arson
B) Lightning strike
C) Cooking accident
D) Electrical fire
  • 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 a natural source
C) Fire was caused by electrical short circuit
D) Fire started in the ceiling
  • 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 was accidental
B) Fire originated on the ceiling
C) Fire started at the lower corner and spread upward
D) Fire was intentionally started on the roof
  • 99. A garage has several burn patterns concentrated near stored gasoline cans. What is the likely cause of fire?
A) Fire ignited using accelerants
B) Electrical malfunction
C) Spontaneous combustion
D) Lightning strike
  • 100. Multiple rooms show similar V-shaped burn patterns pointing toward a central point. What does this suggest about the fire scene?
A) Central point may indicate multiple ignition sources (possible arson)
B) Fire spread from the ceiling
C) Fire was accidental
D) Fire started outside the building
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