WorksheetsQUIZ CHAPTER 4 OSH
Total questions: 25
Worksheet time: 13mins
Which of the following is a good electrical safety practice?
A. Use wet hands when plugging devices
B. Touch exposed wires carefully
C. Ensure all cables are insulated and grounded
D. Work alone without supervision
The primary purpose of engineering controls in hazard management is to:
Train workers on safety rules
Eliminate or reduce hazards through design
Enforce PPE use
Rotate workers frequently
The main hazard from mechanical equipment is:
A. Radiation exposure
B. Entanglement or crushing
C. Noise vibration
D. Electrical shock
Which factor belongs to the “fire triangle”?
Smoke
Heat
Ash
Carbon dioxide
Transporting compressed gas cylinders safely requires:
A. Rolling them on the ground
B. Carrying by hand
C. Dragging with rope
D. Using cylinder trolleys and protective caps
The correct action during a fire drill is to:
A. Run to the exit
B. Use elevators
C. Follow evacuation route calmly
D. Hide under desk
The appropriate first aid for chemical splash on skin is to:
A. Apply ointment
B. Rub alcohol
C. Rinse immediately with running water for 15 minutes
D. Cover with bandage
The main safety function of a lift’s interlock system is to:
A. Control lighting
B. Prevent door opening when the lift is moving
C. Sound music
D. Reduce energy use
Which of the following is a chemical control measure?
A. Use of fume hood or local exhaust ventilation
B. Wearing cotton gloves only
C. Using open containers
D. Mixing chemicals manually
When lifting a heavy object manually, workers should:
A. Hold object away from body
B. Bend forward
C. Twist waist while lifting
D. Bend knees and keep back straight
In radiation work, ionizing radiation refers to:
A. Visible light
B. Microwave
C. X-rays and gamma rays
D. Infrared light
Long-term exposure to vibration may cause:
A. Eye irritation
B. Hand-arm vibration syndrome (HAVS)
C. Fatigue only
D. Skin burns
The recommended hearing protection is required when noise levels exceed:
A. 45 dB(A)
B. 65 dB(A)
C. 85 dB(A)
D. 100 dB(A)
The best location for gas cylinder storage is:
A. Inside a small, enclosed room
B. Near open flames
C. Under desks
D. Upright and ventilated area away from heat
Fire extinguishers for electrical fires are classified as:
A. Class A
B. Class D
C. Class C
D. Class K
Mechanical hazards mainly cause:
A. Burns
B. Entanglement, crushing, or shearing
C. Electrocution
D. Fatigue
A Ground Fault Circuit Interrupter (GFCI) functions to:
A. Control current speed
B. Cut power when current leaks to ground
C. Increase voltage
D. Delay overload
A non-ionizing radiation source is:
A. X-rays
B. Ultraviolet light
C. Gamma rays
D. Alpha particles
Ionizing radiation is dangerous because it can:
A. Cause burns only
B. Increase body temperature
C. Improve tissue health
D. Damage cells and DNA
Thermal stress happens when:
A. The body is exposed to cold air only
B. The body cannot regulate heat from extreme temperature exposure
C. Worker stands under shade
D. Worker wears thin clothes
When handling chemicals, workers must first:
A. Smell the chemical
B. Guess the hazard
C. Refer to the SDS and label information
D. Ask a colleague
Which type of control depends most on worker behavior?
A. Administrative control
B. Engineering control
C. Elimination
D. Substitution
The most effective control in the hierarchy of hazard control is:
A. PPE
B. Elimination or substitution of hazard
C. Administrative control
D. Warning signs
The correct posture when lifting heavy loads is:
A. Bend forward from the waist
B. Use only arm strength
C. Twist and lift
D. Bend the knees and keep the back straight
What type of injury is most commonly caused by mechanical hazards in the workplace
Crushing
Cutting and Tearing
Shearing
Straining and Spraining
Puncturing
