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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) Fuel, Oxygen, Chemical Chain Reaction
B) Heat, Smoke, Flame
C) Fuel, Oxygen, Heat
D) Oxygen, Flame, Ignition
  • 2. The Fire Tetrahedron adds one more element to the Fire Triangle. What does this additional element represent?
A) Smoke production
B) Heat radiation
C) Chemical chain reaction
D) Fuel expansion
  • 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 that resist burning
D) Materials used to ignite fire
  • 4. Smoke, heat, and toxic gases released during burning are examples of:
A) Fire hazards
B) Thermal energy
C) Fire extinguishing agents
D) Combustion by-products
  • 5. Friction, electricity, and chemical reaction are examples of what?
A) Products of fire spread
B) Forms of oxygen
C) Flame types
D) Sources of heat energy
  • 6. Which source of heat energy occurs when two objects rub together and produce heat?
A) Electrical heat
B) Solar heat
C) Chemical heat
D) Mechanical heat
  • 7. Heat transfer by direct physical contact between molecules is known as:
A) Conduction
B) Expansion
C) Radiation
D) Convection
  • 8. Which method of heat transfer is responsible for the upward movement of hot gases and smoke during a fire?
A) Conduction
B) Reflection
C) Convection
D) Radiation
  • 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) Decay stage
B) Ignition stage
C) Fully developed stage
D) Growth 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) Oxygen
B) Heat
C) Fuel
D) Chemical chain reaction
  • 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) Chemical chain reaction
B) Water vapor
C) Carbon dioxide
D) Oxygen
  • 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) Light
B) Heat
C) Steam
D) Toxic gases
  • 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) Reflection
B) Radiation
C) Conduction
D) Convection
  • 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) Conduction
B) Refractive heating
C) Convection
D) Radiation
  • 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) Solar
B) Mechanical
C) Chemical
D) Electrical
  • 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) Fully developed
D) Growth
  • 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) Incipient stage
D) Fully developed stage
  • 21. A Class A fire involves which type of material?
A) Flammable liquids
B) Ordinary combustibles like wood and cloth
C) Electrical equipment
D) Combustible metals
  • 22. A fire involving gasoline and oil is classified as:
A) Class A
B) Class B
C) Class C
D) Class D
  • 23. What type of fire extinguisher is MOST appropriate for an electrical fire?
A) CO₂ or dry chemical extinguisher
B) Water extinguisher
C) Wet chemical extinguisher
D) Foam extinguisher
  • 24. Which fire extinguishing method works by lowering the temperature below ignition point?
A) Inhibiting chemical chain reaction
B) Starvation
C) Cooling
D) Smothering
  • 25. Removing combustible materials from a burning area is an example of which extinguishing method?
A) Chemical inhibition
B) Smothering
C) Cooling
D) Starvation
  • 26. The BEST method to extinguish a Class K (kitchen) fire caused by hot cooking oil is:
A) Smother with a lid or use wet chemical extinguisher
B) Pour water directly
C) Use a CO₂ extinguisher
D) Lower the room temperature
  • 27. Fire prevention primarily focuses on:
A) Investigating causes of existing fires
B) Responding to fires that have already started
C) Educating the public and eliminating hazards before ignition
D) Suppressing flames as quickly as possible
  • 28. Fire suppression refers to:
A) Controlling and extinguishing active fires
B) Training firefighters
C) Investigating the fire’s cause
D) Stopping fires from starting
  • 29. Which phase of firefighting includes exposure protection and preventing the fire from spreading?
A) Overhaul phase
B) Mop-up 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 B
B) Class A
C) Class C
D) Class D
  • 32. What is the most appropriate extinguishing method for Class A fires?
A) Cooling with water
B) Using CO₂
C) Using dry powder
D) Smothering with foam
  • 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) Smothering
B) Starvation
C) Cooling
D) Radiation
  • 36. Which of the following is the BEST example of fire prevention?
A) Removing burning materials
B) Using foam to stop fire growth
C) Closing doors to slow fire spread
D) Performing regular maintenance on electrical systems
  • 37. What is the FIRST phase of firefighting?
A) Salvage
B) Overhaul
C) Size-up
D) Suppression
  • 38. During which phase of firefighting do firefighters primarily work to extinguish the fire and stop its spread?
A) Suppression
B) Control
C) Overhaul
D) Salvage
  • 39. The phase in which firefighters search for hidden embers and prevent rekindling is called:
A) Control
B) Salvage
C) Overhaul
D) Size-up
  • 40. Which action is part of fire control rather than fire prevention?
A) Installing smoke detectors
B) Educating the public about fire hazards
C) Properly storing flammable liquids
D) Confine the fire to its area of origin
  • 41. Which of the following is an example of active fire protection?
A) Fire-resistant walls
B) Fire doors
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) CO detector
C) Heat detector
D) Photoelectric smoke detector
  • 43. Which of the following is considered passive fire protection?
A) Fire alarm systems
B) Fire extinguishers
C) Fire-rated walls and ceilings
D) Automatic sprinklers
  • 44. What type of detector activates when the temperature reaches a set level?
A) Smoke detector
B) Carbon monoxide detector
C) Flame detector
D) Heat detector
  • 45. Which fire suppression system uses water as its primary extinguishing agent?
A) Water sprinkler system
B) CO₂ system
C) Dry chemical system
D) FM-200 system
  • 46. Which component alerts building occupants during a fire emergency?
A) Manual pull station
B) Alarm sounder or bell
C) Control panel
D) Heat detector
  • 47. The main function of a flame detector is to detect:
A) Carbon monoxide levels
B) Smoke particles
C) Rising temperature
D) Visible or infrared light from flames
  • 48. Which system must be manually activated by a person?
A) Fire pump
B) Manual pull station
C) Smoke detector
D) Automatic sprinkler
  • 49. Fire doors are classified as what type of fire protection?
A) Active
B) Detection system
C) Passive
D) Special protection
  • 50. Which fire suppression agent is best for protecting sensitive electronic equipment?
A) FM-200
B) CO₂
C) Water
D) Sand
  • 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) 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) Smoke detector
B) Fire alarm
C) Fire hose reel
D) Fire-resistant flooring
  • 54. Which type of suppression system releases fine mist to cool and smother the fire?
A) CO₂ system
B) Water mist system
C) Wet pipe sprinkler
D) Dry chemical system
  • 55. The purpose of passive fire protection is to:
A) Suppress fire automatically
B) Notify building occupants
C) Detect fire early
D) Contain fire and prevent spread
  • 56. Which system activates only after a sprinkler head’s glass bulb bursts?
A) CO₂ flooding system
B) Wet pipe sprinkler system
C) Deluge system
D) Dry pipe system
  • 57. What component is used to manually signal a fire emergency?
A) Smoke barrier
B) Fire damper
C) Fire extinguisher bracket
D) Manual call point
  • 58. Fire dampers installed in air ducts are an example of:
A) Active fire detection
B) Passive fire protection
C) Alarm notification
D) Active suppression
  • 59. A device that sounds an alarm when smoke levels exceed a threshold is a:
A) Fire hose
B) Smoke detector
C) Fire hydrant
D) Ventilation damper
  • 60. Which equipment actively releases an extinguishing agent to control fire?
A) Fire partitions
B) Fire-rated doors
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 1613
B) RA 9262
C) PD 1602
D) RA 9851
  • 62. Under PD 1613, which is considered simple arson?
A) Burning a warehouse used as storage for goods
B) Burning an inhabited house
C) Burning a school building
D) Burning a government office
  • 63. Which of the following constitutes destructive arson under PD 1613?
A) Burning a pile of garbage
B) Burning one’s own belongings inside a private room
C) Burning a public building or government-owned structure
D) Burning an uninhabited hut
  • 64. What is the essential element of arson under PD 1613?
A) The fire was caused by accident
B) Intentional and malicious burning of property
C) The property is damaged due to negligence
D) Burning occurred due to natural causes
  • 65. Under PD 1613, which of the following acts does NOT constitute arson?
A) Burning grass in an empty lot accidentally
B) Deliberately burning crops belonging to another
C) Setting fire to a building used for business
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) Reclusion perpetua to death
D) Fine only
  • 67. Which scenario qualifies as arson “committed by means of explosion” under PD 1613?
A) A fire starts because of faulty electrical wiring
B) Fire spreads naturally due to strong wind
C) A person uses a bomb to set a building on fire
D) A person accidentally drops gasoline near a flame
  • 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 prepares gasoline but takes no action
B) The suspect reports a fake fire
C) The suspect successfully burns a house
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) Fire caused by lightning
B) Arson committed on an empty field
C) Arson committed to conceal another crime
D) Arson committed accidentally
  • 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) Destructive 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) Destructive arson
B) Attempted arson
C) Simple 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) No arson
B) Malicious mischief
C) Destructive arson
D) Simple 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) Destructive 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) No crime
C) Destructive arson
D) Simple 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) Destructive arson
B) Accidental burning
C) Arson with a qualifying circumstance
D) Simple 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) Simple arson
B) Attempted arson
C) Malicious mischief
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) No arson since the building is abandoned
B) Attempted arson
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) Destructive arson
C) Attempted arson
D) Accidental 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) Start extinguishing the fire immediately
D) Conduct a systematic scene survey
  • 82. A char pattern on a wooden floor forms a V-shape pointing toward a wall. What does this indicate?
A) Fire was caused by electrical fault
B) Fire moved randomly
C) Fire started on the ceiling
D) Fire originated near the wall
  • 83. Deep charring on the floor and furniture in one room suggests what about the fire?
A) The fire started elsewhere
B) The fire burned slowly
C) The fire was electrical
D) That room is likely the point of origin
  • 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) Lightning strike
B) Electrical malfunction
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 a single point
B) Fire started from multiple points (possible arson)
C) Fire moved randomly
D) Fire was accidental
  • 87. Heavy smoke staining on walls near the ceiling helps investigators determine:
A) The time the fire started
B) The exact cause of the fire
C) The spread and direction of fire
D) Who caused the fire
  • 88. Alligatoring of wood surfaces (cracks in char resembling alligator skin) indicates:
A) Fire was caused by chemicals
B) Water was applied early
C) Fire started recently
D) The intensity and duration of burning
  • 89. Which observation suggests the fire may have been intentionally set?
A) Single area of deep charring
B) Multiple points of origin
C) Fire confined to kitchen appliances
D) Uniform burn throughout the room
  • 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 fire was accidental
B) The fire originated in the adjacent rooms
C) The fire started on the roof
D) The heavily charred room is likely the point of origin
  • 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 moved away from the corner
C) Fire likely originated at that corner
D) Fire originated on the ceiling
  • 93. Investigators find multiple deep charring points in different areas of a room. What conclusion is most reasonable?
A) Fire may have been intentionally set (possible arson)
B) Fire started accidentally from one source
C) Fire was caused by faulty ventilation
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 intentionally set
D) The fire was caused by an electrical fault
  • 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 involved water accelerants
C) Fire was brief and low intensity
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) Electrical fire
C) Cooking accident
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 started in the ceiling
C) Fire was caused by a natural source
D) Fire was caused by electrical short circuit
  • 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 intentionally started on the roof
B) Fire started at the lower corner and spread upward
C) Fire originated on the ceiling
D) Fire was accidental
  • 99. A garage has several burn patterns concentrated near stored gasoline cans. What is the likely cause of fire?
A) Electrical malfunction
B) Lightning strike
C) Spontaneous combustion
D) Fire ignited using accelerants
  • 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 was accidental
C) Fire spread from the ceiling
D) Fire started outside the building
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