Occupational Risk Prevention Practice Quiz (21 questions)

1. Which statement best defines an occupational risk?

A. A personal illness unrelated to the worker’s conditions

B. The harm that a worker has already experienced at work

C. The possibility that working conditions cause harm to a worker

D. A safety rule designed to prevent incidents at work

Answer: (C)

Explanation

An occupational risk is the possibility that a worker will suffer harm because of working conditions. Occupational damage refers to harm that has actually occurred, so it is not the same concept.

2. What is meant by a working condition in occupational health?

A. A formal procedure used after an occupational accident

B. Any injury that results from exposure to a workplace hazard

C. Any work characteristic that can influence the generation of occupational risks

D. A worker’s physical ability to complete assigned duties

Answer: (C)

Explanation

A working condition is any characteristic of work that can contribute to the generation of occupational risks. An injury is the resulting harm, not the work characteristic that may produce the risk.

3. Which description reflects the broad occupational health concept?

A. Mental stability and physical strength, measured through performance at work

B. Freedom from diagnosed disease, regardless of social or psychological well-being

C. Physical, mental, and social well-being, rather than merely absence of illness

D. Physical fitness for assigned tasks, together with freedom from workplace injuries

Answer: (C)

Explanation

Health includes physical, mental, and social well-being, not merely the absence of illness. A person can lack a diagnosed illness while still experiencing poor mental or social well-being.

4. Which group contains the safety conditions highlighted for workplace assessment?

A. Workplaces, premises and installations, and work equipment

B. Chemical labels, biological samples and noise measurements

C. Production targets, customer demands and organizational objectives

D. Employee health records, salaries and schedules, and training certificates

Answer: (A)

Explanation

The highlighted safety conditions include workplaces, premises and installations, and work equipment. The other groups concern administrative information, environmental agents, or organizational matters rather than the specified safety conditions.

5. A worker trips on a level floor without falling from an elevated surface; which hazard does this illustrate?

A. A failure caused by unsuitable work equipment

B. A fall from a different level

C. A blow or collision against an object

D. A fall on the same level

Answer: (D)

Explanation

A trip on a level floor illustrates a fall on the same level because there is no change in elevation from one surface to another. A fall from a different level involves a distinct height relationship.

6. Which pairing correctly applies the highlighted safety heights?

A. Three metres as a general height and 2.5 metres in offices

B. Ninety centimetres as a general height and 2.5 metres for guardrails

C. Three metres in offices and 2.5 metres as a general height

D. Ninety centimetres in offices and three metres for guardrails

Answer: (A)

Explanation

The highlighted values present 3 m as a general height and 2.5 m as the value associated with offices. The 90 cm value refers to guardrails, not to either of those height categories.

7. Which classification correctly distinguishes environmental hazards from procedures?

A. Physical and chemical agents are procedures, while biological agents describe workplace installations

B. Physical, chemical, and biological agents are hazard categories, while procedures are work methods

C. Physical, chemical, and biological agents are work methods, while procedures are hazard categories

D. Procedures are exposure measurements, while physical, chemical, and biological agents are safety controls

Answer: (B)

Explanation

Environmental hazards are distinguished as physical, chemical, and biological agents, alongside procedures. The agents describe hazard categories, whereas procedures refer to the work methods through which exposure may occur.

8. Which measurement pairing is correct for environmental exposure assessment?

A. Illumination is measured in lux, while sound levels are measured in decibels

B. Illumination is measured in percentages, while sound levels are measured in degrees

C. Illumination is measured in decibels, while sound levels are measured in lux

D. Illumination is measured in metres, while sound levels are measured in kilograms

Answer: (A)

Explanation

Illumination is measured in lux, and the required level depends on relevant conditions identified in the materials. Decibels are associated with sound levels, so they are not the unit for illumination.

9. Which pairing correctly distinguishes the two sound-level measurements used for different frequency weightings?

A. dB(A) measures workplace duration, whereas dB(C) measures hearing damage

B. dB(A) identifies biological agents, whereas dB(C) identifies chemical hazards

C. dB(A) measures vibration exposure, whereas dB(C) measures radiation exposure

D. dB(A) and dB(C) apply different frequency weightings to measured noise

Answer: (D)

Explanation

The distinction concerns different frequency weightings used to express noise levels, including values such as 80, 85, and 87 dB(A) and 135 and 140 dB(C). The distractors confuse sound measurements with exposure duration, vibration, radiation, or hazard classification.

10. What does hypoacusis describe in relation to workplace noise?

A. The noise exposure that creates a potential workplace risk

B. Noise-related hearing loss that may result from exposure

C. A measurement scale used to classify high-frequency noise

D. A temporary increase in sensitivity to workplace sounds

Answer: (B)

Explanation

Hypoacusis is hearing loss identified as possible damage caused by noise exposure. Noise exposure itself is the risk factor, not the resulting hearing impairment.

11. A worker operates a vibrating excavator, while another uses a vibrating hand tool; which classification best matches these exposures?

A. The excavator involves hand-arm vibration, while the hand tool involves whole-body vibration

B. Both exposures involve whole-body vibration because both workers operate equipment

C. The excavator involves whole-body vibration, while the hand tool involves hand-arm vibration

D. Both exposures involve hand-arm vibration because both workers use machinery

Answer: (C)

Explanation

Whole-body vibration can occur with equipment such as excavators, while hand-arm vibration mainly affects the hands and arms when using hand tools. The alternative classifications reverse or erase the distinction between the body regions affected.

12. Which pair consists of ionizing radiation examples?

A. X-rays and gamma rays

B. Microwaves and infrared radiation

C. Visible light and mobile phones

D. Mobile phones and microwaves

Answer: (A)

Explanation

X-rays and gamma rays are identified as ionizing radiation. Mobile phones and microwaves are examples of non-ionizing radiation in the stated classification.

13. Which statement correctly distinguishes mutagenic substances from reproductive toxicants?

A. Mutagenic substances affect reproduction, whereas reproductive toxicants alter genetic material

B. Mutagenic substances are identified by noise levels, whereas reproductive toxicants are identified by vibration levels

C. Mutagenic substances affect genetic material, whereas reproductive toxicants affect reproduction

D. Mutagenic substances cause flammability, whereas reproductive toxicants cause explosiveness

Answer: (C)

Explanation

A mutagenic substance affects genetic material, while a reproductive toxicant affects reproductive functions. Flammability and explosiveness are separate chemical hazards, not the defining distinction between these two toxicological categories.

14. Hepatitis B is presented as a disease caused by a biological agent and assigned to which occupational-disease group?

A. Group 2

B. Group 3

C. Group 1

D. Group 4

Answer: (B)

Explanation

Hepatitis B is given as an example of a biological-agent disease classified in occupational-disease Group 3. This occupational-disease classification should not be confused with the separate groups used to classify biological agents.

15. Which route of entry involves a substance passing through an injury or other break in the body?

A. Parenteral route

B. Dermal or cutaneous route

C. Respiratory route

D. Digestive route

Answer: (A)

Explanation

The parenteral route involves entry through an injury or break in the body. Dermal entry occurs through skin contact, while respiratory and digestive routes involve inhalation and ingestion, respectively.

16. A job requires lifting heavy loads and maintaining awkward postures, while another task demands sustained psychological concentration; how should these demands be classified?

A. Both reflect mental workload because both can contribute to fatigue

B. The first reflects physical workload, while the second reflects mental workload

C. The first reflects mental workload, while the second reflects physical workload

D. Both reflect physical workload because both occur during work activities

Answer: (B)

Explanation

Physical workload concerns bodily effort, including load handling and postures, whereas mental workload concerns psychological demands. The other choices either reverse the categories or treat different forms of workload as the same.

17. Which set lists the three components of burnout syndrome?

A. Respiratory entry, dermal contact, and parenteral exposure

B. Hostile conduct, repetition, and prolonged workplace conflict

C. Emotional exhaustion, depersonalization, and low personal accomplishment

D. Physical fatigue, lower-back pain, and musculoskeletal disorders

Answer: (C)

Explanation

Burnout syndrome consists of emotional exhaustion, depersonalization, and low personal accomplishment. The other sets describe physical workload effects, mobbing characteristics, or routes of entry into the body.

18. Which situation meets the defining pattern of mobbing?

A. Hostile or violent workplace conduct that is repeated and prolonged over time

B. A brief accident that causes conflict between two employees

C. A single heated disagreement between coworkers during one work shift

D. A workplace instruction delivered firmly by a supervisor once

Answer: (A)

Explanation

Mobbing involves hostile or violent conduct that is repeated and prolonged over time, and a formal power relationship is not required. An isolated disagreement, instruction, or accident does not by itself establish this pattern.

19. What distinguishes an occupational disease from a work accident?

A. An occupational disease concerns nonwork-related illness, whereas a work accident concerns illness caused by occupational exposure.

B. An occupational disease occurs during commuting, whereas a work accident develops after prolonged workplace exposure.

C. An occupational disease results from a sudden workplace event, whereas a work accident develops through repeated chemical exposure.

D. An occupational disease develops through occupational exposure, whereas a work accident results from an accident connected with work.

Answer: (D)

Explanation

An occupational disease develops over time because of occupational exposure, while a work accident is linked to an accident connected with work. Commuting incidents are a separate category involving travel between home and work, not the defining distinction here.

20. Which occupational-disease group concerns biological agents?

A. Group 4

B. Group 1

C. Group 3

D. Group 6

Answer: (C)

Explanation

Group 3 covers biological agents within the six occupational-disease groups. Group 1 concerns chemical agents, while Group 4 concerns inhalation of substances and Group 6 concerns carcinogenic agents.

21. An employee is injured while traveling from home to the workplace before starting the workday; how is this incident classified?

A. An accident in mission

B. A rescue accident

C. An intercurrent disease

D. An in itinere accident

Answer: (D)

Explanation

An in itinere accident occurs during travel between home and work. An accident in mission instead occurs during travel required by the job, whereas the other choices identify different work-related categories.