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Worksheetsشابتر 8و 9
Total questions: 45
Worksheet time: 23mins
What are the three elements of the Fire Triangle?
Heat, Smoke, Fuel
Fuel, Oxygen, Ignition Source
Wood, Paper, Electrical
Spark, Air, Gasoline
Which class of fire involves flammable liquids like gasoline or oil?
Class A
Class B
Class C
Class D
Which type of fire extinguisher should NOT be used on electrical fires?
Carbon Dioxide
Dry Powder
Water
Foam
What is the most common cause of death in a fire?
Heat and flames
Structural collapse
Smoke and toxic gases
Panic
Which fire extinguisher is suitable for Class A, B, and C fires?
Water
Carbon Dioxide
Dry Powder (ABC)
Wet Chemical
What does the P.A.S.S. method stand for?
Prevent, Alert, Secure, Save
Pull, Aim, Squeeze, Sweep
Plan, Act, Suppress, Secure
Protect, Assess, Spray, Stop
Which system holds water back using compressed air until needed?
Wet-pipe sprinkler system
Deluge system
Dry-pipe sprinkler system
Pre-action system
What is the purpose of a hot-work permit?
To authorize use of heaters
To control fires from sparks or open flames
To schedule fire drills
To inspect electrical panels
Which of the following is a static water source?
Fire hydrant
Municipal water main
Lake or pond
Water tender
Which type of fire hydrant is used in cold climates?
Wet-barrel hydrant
Dry-barrel hydrant
Blue-top hydrant
High-pressure hydrant
What percentage of industrial fires are caused by arson?
5%
13%
25%
40%
Which fire class involves energized electrical equipment?
Class A
Class B
Class C
Class K
What is the main risk of using water on a flammable liquid fire?
It releases toxic gas
It freezes the fuel
It scatters the fuel and spreads the fire
It causes an explosion
Which of these is a source of ignition?
Wood
Oxygen
Static electricity
Paper
What is the primary goal in a building fire?
Save property
Protect life
Extinguish fire quickly
Prevent smoke damage
Which detector uses ionization to sense fires?
Thermal detector
Flame detector
Photoelectric detector
Ionization detector
What should be done with combustible waste in the workplace?
Store it near exits for easy removal
Collect it frequently and remove from workplace
Use it as insulation material
Burn it during off-hours
What should you avoid using during a fire evacuation?
Stairs
Elevators
Fire escapes
Emergency exits
Which fire suppression system is used for cooking oil fires?
Carbon Dioxide
Dry Chemical
Wet Chemical
Water Spray
What is a key element of fire prevention in facilities?
Good housekeeping
Using elevators
Storing fuel near ignition sources
Turning off alarms
Which of these is a flammable gas?
Oxygen
Nitrogen
Propane (cooking gas)
Carbon Dioxide
What does a pre-action sprinkler system do?
Releases water only where fire is detected
Floods the entire area immediately
Uses foam instead of water
Works only manually
Which type of portable fire extinguisher can be dangerous in enclosed spaces?
Water extinguisher
Carbon dioxide extinguisher
Dry powder extinguisher
Wet chemical extinguisher
What is the main function of ventilation during a fire?
To spread the fire
To remove smoke and toxic gases
To increase oxygen for the fire
To cool the building structure
Which type of portable extinguisher is safe for metal fires?
Class A
Class B
Class C
Class D
What is the definition of machinery according to the document?
A device that uses electricity
An assembly of linked parts, at least one of which moves
Any tool used in construction
Equipment that produces noise
Which of the following is a mechanical hazard?
Stress
Noise
Entanglement
Radiation
What should be done before using a machine in some cases?
Clean the machine
Conduct a risk assessment
Change the operator
Increase the speed
Which of these is a non-mechanical hazard?
Cutting
Shearing
Vibration
Crushing
What is the first step in working safely with machinery?
Identify who will use the machine
Understand how the machine is designed
Estimate the risk
Use protective measures
Which factor is considered when estimating risk?
Color of the machine
Severity of possible injuries
Brand of the machine
Age of the operator
What type of injury can result from a high-pressure fluid injection?
Burn
Injection of fluid into the body
Electric shock
Frostbite
Rotating shafts can be dangerous because they can:
Change color
Emit radiation
Grip clothing
Produce gas
Which of the following is an example of a rotating mechanism?
Hammer
Flywheel
Screwdriver
Paint sprayer
What should be done if a hazard cannot be eliminated?
Ignore it
Use protective measures
Stop using the machine
Increase workload
Which of these is a psychosocial hazard?
Entrapment
Stress
Vibration
Shearing
What does safeguarding machinery help with?
Increasing speed
Reducing cost
Safe design, installation, and use
Making it louder
A loose sleeve getting caught in a moving part is an example of:
Cutting
Entanglement
Stabbing
Friction
Which of these is not a mechanical hazard?
Impact
Crushing
Noise
Shearing
Why is it important to identify who will use the machine?
To assign blame
To determine frequency and user skill level
To choose the machine color
To calculate salary
What type of motion can be dangerous even if it is smooth and slow?
Linear motion
Rotating motion
Vibrating motion
Static position
Which of the following is a source of high-pressure fluid hazard?
Sandpaper
Hydraulic system
Hand saw
Glue
What should be done after applying protective measures?
Stop maintenance
Re-assess the risk
Sell the machine
Increase operating speed
Which injury involves two moving parts moving across one another?
Cutting
Shearing
Puncture
Abrasion
What is the final step in the risk assessment process if the risk is not controlled?
Ignore the risk
Repeat the process
Fire the operator
Use the machine less
