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CDI-5 - Quiz
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, Chemical Chain Reaction
D) Fuel, Oxygen, Heat
  • 2. The Fire Tetrahedron adds one more element to the Fire Triangle. What does this additional element represent?
A) Fuel expansion
B) Heat radiation
C) Chemical chain reaction
D) Smoke production
  • 3. Which of the following BEST describes “products of combustion”?
A) Materials that resist burning
B) Materials used to ignite fire
C) Chemicals used to extinguish fire
D) Substances produced as a result of burning
  • 4. Smoke, heat, and toxic gases released during burning are examples of:
A) Thermal energy
B) Combustion by-products
C) Fire hazards
D) Fire extinguishing agents
  • 5. Friction, electricity, and chemical reaction are examples of what?
A) Products of fire spread
B) Sources of heat energy
C) Forms of oxygen
D) Flame types
  • 6. Which source of heat energy occurs when two objects rub together and produce heat?
A) Mechanical heat
B) Chemical heat
C) Electrical heat
D) Solar heat
  • 7. Heat transfer by direct physical contact between molecules is known as:
A) Expansion
B) Convection
C) Conduction
D) Radiation
  • 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) Convection
D) Reflection
  • 9. During which stage of fire development does the fire rapidly grow and heat build up, eventually leading to possible flashover?
A) Growth stage
B) Fully developed stage
C) Incipient stage
D) Decay 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) Fully developed stage
C) Ignition 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) Fuel
B) Oxygen
C) Chemical chain reaction
D) Heat
  • 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) Fuel
B) Oxygen
C) Chemical chain reaction
D) Heat
  • 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) Chemical chain reaction
C) Oxygen
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) Heat
C) Toxic gases
D) Light
  • 15. A wooden building ignites due to a lightning strike during a storm. Which source of heat energy triggered the fire?
A) Mechanical heat
B) Chemical heat
C) Electrical heat
D) Solar heat
  • 16. A steel beam heats up because it is directly touching a burning wooden wall. Which method of heat transfer is responsible?
A) Radiation
B) Conduction
C) Reflection
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) Convection
C) Refractive heating
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) Electrical
B) Chemical
C) Mechanical
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) Growth
B) Flashover leading to fully developed stage
C) Fully developed
D) Incipient
  • 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) Growth stage
B) Fully developed stage
C) Decay stage
D) Incipient stage
  • 21. A Class A fire involves which type of material?
A) Electrical equipment
B) Flammable liquids
C) Combustible metals
D) Ordinary combustibles like wood and cloth
  • 22. A fire involving gasoline and oil is classified as:
A) Class D
B) Class B
C) Class C
D) Class A
  • 23. What type of fire extinguisher is MOST appropriate for an electrical fire?
A) Water extinguisher
B) Wet chemical extinguisher
C) Foam extinguisher
D) CO₂ or dry chemical extinguisher
  • 24. Which fire extinguishing method works by lowering the temperature below ignition point?
A) Smothering
B) Inhibiting chemical chain reaction
C) Starvation
D) Cooling
  • 25. Removing combustible materials from a burning area is an example of which extinguishing method?
A) Smothering
B) Cooling
C) Chemical inhibition
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) Lower the room temperature
D) Use a CO₂ extinguisher
  • 27. Fire prevention primarily focuses on:
A) Investigating causes of existing fires
B) Educating the public and eliminating hazards before ignition
C) Responding to fires that have already started
D) Suppressing flames as quickly as possible
  • 28. Fire suppression refers to:
A) Investigating the fire’s cause
B) Training firefighters
C) Controlling and extinguishing active fires
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) Rescue phase
B) Initial attack phase
C) Size-up phase
D) Overhaul phase
  • 31. Which fire class involves combustible solids like wood, cloth, and paper?
A) Class B
B) Class A
C) Class D
D) Class C
  • 32. What is the most appropriate extinguishing method for Class A fires?
A) Using dry powder
B) Smothering with foam
C) Using CO₂
D) Cooling with water
  • 33. Which fire class involves flammable liquids such as gasoline, oil, or paint?
A) Class C
B) Class D
C) Class K
D) Class B
  • 34. Which extinguishing agent is recommended for electrical (Class C) fires?
A) Water extinguisher
B) Sand
C) CO₂ or dry chemical powder
D) Wet chemical agent
  • 35. Which method of extinguishing fire works by removing oxygen from the fire triangle?
A) Cooling
B) Smothering
C) Radiation
D) Starvation
  • 36. Which of the following is the BEST example of fire prevention?
A) Performing regular maintenance on electrical systems
B) Using foam to stop fire growth
C) Closing doors to slow fire spread
D) Removing burning materials
  • 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) Overhaul
C) Suppression
D) Salvage
  • 39. The phase in which firefighters search for hidden embers and prevent rekindling is called:
A) Size-up
B) Control
C) Salvage
D) Overhaul
  • 40. Which action is part of fire control rather than fire prevention?
A) Properly storing flammable liquids
B) Installing smoke detectors
C) Educating the public about fire hazards
D) Confine the fire to its area of origin
  • 41. Which of the following is an example of active fire protection?
A) Fire-stopping materials
B) Fire-resistant walls
C) Fire doors
D) Fire sprinkler system
  • 42. Which device detects smoke particles in the air using a light beam?
A) Heat detector
B) Ionization detector
C) Photoelectric smoke detector
D) CO detector
  • 43. Which of the following is considered passive fire protection?
A) Fire alarm systems
B) Fire extinguishers
C) Automatic sprinklers
D) Fire-rated walls and ceilings
  • 44. What type of detector activates when the temperature reaches a set level?
A) Carbon monoxide detector
B) Flame detector
C) Smoke 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) 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) Carbon monoxide levels
C) Rising temperature
D) Smoke particles
  • 48. Which system must be manually activated by a person?
A) Automatic sprinkler
B) Fire pump
C) Manual pull station
D) Smoke detector
  • 49. Fire doors are classified as what type of fire protection?
A) Special protection
B) Passive
C) Detection system
D) Active
  • 50. Which fire suppression agent is best for protecting sensitive electronic equipment?
A) Sand
B) CO₂
C) FM-200
D) Water
  • 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) Passive fire component
B) Detection equipment
C) Notification appliance
D) System control center
  • 53. Which of the following is not an active fire protection system?
A) Fire alarm
B) Fire hose reel
C) Smoke detector
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) Suppress fire automatically
B) Contain fire and prevent spread
C) Notify building occupants
D) Detect fire early
  • 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) Manual call point
C) Fire extinguisher bracket
D) Fire damper
  • 58. Fire dampers installed in air ducts are an example of:
A) Passive fire protection
B) Active fire detection
C) Alarm notification
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 sprinkler
C) Fire partitions
D) Fire-resistant walls
  • 61. Which law governs the penal provisions for arson that replaced Article 320 of the Revised Penal Code?
A) RA 9851
B) PD 1602
C) RA 9262
D) PD 1613
  • 62. Under PD 1613, which is considered simple arson?
A) Burning a school building
B) Burning an inhabited house
C) Burning a government office
D) Burning a warehouse used as storage for goods
  • 63. Which of the following constitutes destructive arson under PD 1613?
A) Burning an uninhabited hut
B) Burning a pile of garbage
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 fire was caused by accident
B) The property is damaged due to negligence
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) Burning a neighbor’s vehicle out of revenge
B) Deliberately burning crops belonging to another
C) Setting fire to a building used for business
D) Burning grass in an empty lot accidentally
  • 66. What is the penalty for destructive arson under PD 1613?
A) Reclusion perpetua to death
B) Arresto mayor
C) Reclusion temporal
D) Fine only
  • 67. Which scenario qualifies as arson “committed by means of explosion” under PD 1613?
A) A person uses a bomb to set a building on fire
B) A fire starts because of faulty electrical wiring
C) Fire spreads naturally due to strong wind
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) Accidental burning
C) Negligent arson
D) Simple arson
  • 69. Which act constitutes attempted arson under PD 1613?
A) The suspect successfully burns a house
B) The suspect reports a fake fire
C) The suspect lights a match and places it on property but fire fails to spread
D) The suspect prepares gasoline but takes no action
  • 70. Under PD 1613, which is a qualifying circumstance that increases criminal liability for arson?
A) Fire caused by lightning
B) Arson committed to conceal another crime
C) Arson committed on an empty field
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) Arson with intent to defraud
B) No crime, since it was his own property
C) Destructive arson
D) Simple 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) Accidental arson
B) Simple arson
C) Destructive 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) No arson
C) Malicious mischief
D) Destructive 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) Attempted arson
B) Malicious burning
C) Simple arson
D) Destructive arson
  • 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) Simple arson
B) Destructive arson
C) No crime
D) Attempted arson
  • 76. A student accidentally knocks over a candle that burns part of a classroom wall. What crime applies under PD 1613?
A) Destructive arson
B) Reckless imprudence resulting in damage
C) Simple arson
D) Accidental fire (no arson)
  • 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) Simple arson
C) Accidental burning
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) Attempted arson
B) Simple 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) Simple arson because the structure is not inhabited
B) Destructive arson
C) No arson since the building is abandoned
D) Attempted 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) Attempted arson
B) Destructive arson
C) Simple arson
D) Accidental arson
  • 81. When arriving at a fire scene, what is the first step in evaluating it?
A) Remove debris to access the fire origin
B) Interview witnesses before observing the scene
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 moved randomly
C) Fire was caused by electrical fault
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 was electrical
B) That room is likely the point of origin
C) The fire started elsewhere
D) The fire burned slowly
  • 84. Which type of evidence is MOST important for determining the cause of a fire?
A) Firefighter reports only
B) Burn patterns
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) Cooking accident
C) Arson
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 a single point
B) Fire started from multiple points (possible arson)
C) Fire was accidental
D) Fire moved randomly
  • 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) The exact cause of the fire
D) Who caused the fire
  • 88. Alligatoring of wood surfaces (cracks in char resembling alligator skin) indicates:
A) Water was applied early
B) The intensity and duration of burning
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) Fire confined to kitchen appliances
C) Single area of deep charring
D) Uniform burn throughout the room
  • 90. Burn patterns that show “inverted cones” or holes in the ceiling usually indicate:
A) Fire burned slowly
B) Fire involved accelerants
C) Fire started on the floor
D) Fire was electrical
  • 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 started on the roof
B) The fire originated in the adjacent rooms
C) The fire was accidental
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 likely originated at that corner
B) Fire was caused by natural causes
C) Fire moved away from the 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 was caused by lightning
B) Fire started accidentally from one source
C) Fire may have been intentionally set (possible arson)
D) Fire was caused by faulty ventilation
  • 94. Heavy smoke staining is observed on the upper walls and ceiling. What information does this provide?
A) The fire was intentionally set
B) The fire was caused by an electrical fault
C) The fire started at ceiling level
D) The fire started low and spread upwards
  • 95. Alligatoring of wooden surfaces is present in the room. What does this indicate?
A) Fire was accidental
B) Fire was intense and lasted a significant duration
C) Fire involved water accelerants
D) Fire was brief and low intensity
  • 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) Arson
D) Cooking accident
  • 97. Inverted cone burn patterns are observed on the floor and walls. What does this suggest about the fire?
A) Fire was caused by electrical short circuit
B) Accelerants were likely used
C) Fire was caused by a natural source
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 originated on the ceiling
B) Fire was intentionally started on the roof
C) Fire started at the lower corner and spread upward
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) Fire ignited using accelerants
C) Spontaneous combustion
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) Fire spread from the ceiling
C) Central point may indicate multiple ignition sources (possible arson)
D) Fire started outside the building
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