Under the OSH Act of 1970, what is the primary purpose of OSHA?

To assure safe and healthful working conditions by setting and enforcing standards

To provide workers' compensation insurance to injured employees

To set minimum wage rates for construction workers

To license contractors before they can bid on public projects

The General Duty Clause of the OSH Act requires employers to do what?

Furnish a workplace free from recognized hazards likely to cause death or serious harm

Provide health insurance to all full-time employees

Report every minor first-aid injury to OSHA within 24 hours

Guarantee that no worker will ever be injured on the job

If an employer receives an OSHA citation, what are they generally required to do?

Post the citation at or near the location of the violation and correct the hazard by the abatement date

Immediately shut down the entire company permanently

Ignore it unless a worker was seriously injured

Pay the fine directly to the workers who reported it

Which practice best helps prevent electrocution on a construction site?

Using ground-fault circuit interrupters (GFCIs) and maintaining safe distances from power lines

Using metal ladders near overhead power lines to save time

Removing the grounding prong from a plug so tools fit any outlet

Working on energized circuits without turning off the power

In the hierarchy of hazard controls, where does personal protective equipment (PPE) rank?

It is the last line of defense, used when other controls cannot fully protect the worker

It is the first and most preferred control method

It is equal in preference to eliminating the hazard

It is only used during OSHA inspections

When should a worker inspect PPE such as a hard hat or fall protection harness?

Before each use, checking for cracks, damage, or wear

Only once when it is first purchased

Only after it has already failed

Only when an OSHA inspector requests it

Which construction activity is a common source of hazardous respirable crystalline silica dust?

Cutting, grinding, or drilling concrete, brick, or stone

Under the Globally Harmonized System (GHS) used in HazCom, what is the purpose of pictograms on a chemical label?

To quickly communicate the type of hazard through a standardized symbol

To show the price of the chemical

To indicate the manufacturer's phone number

Before working in a trench 5 feet or deeper, what must generally be in place unless the trench is made entirely of stable rock?

A protective system such as sloping, benching, shoring, or a trench shield

A fresh coat of paint on the walls

At least three workers standing inside at all times

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All topics Introduction to OSHA Focus Four Hazards PPE & Lifesaving Equipment Health Hazards in Construction Electives 🧠 Smart Review 🎯 Focus weak ⭐ Saved 🔁 My mistakes

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1. Introduction to OSHA
Under the OSH Act of 1970, what is the primary purpose of OSHA?
- a.To provide workers' compensation insurance to injured employees
- b.To assure safe and healthful working conditions by setting and enforcing standards
- c.To set minimum wage rates for construction workers
- d.To license contractors before they can bid on public projects
Answer: b
Explanation: The Occupational Safety and Health Act of 1970 created OSHA to assure safe and healthful working conditions for workers by setting and enforcing standards and by providing training, outreach, education, and assistance. Wages, licensing, and workers' compensation are handled by other agencies.
2. Introduction to OSHA
The General Duty Clause of the OSH Act requires employers to do what?
- a.Provide health insurance to all full-time employees
- b.Report every minor first-aid injury to OSHA within 24 hours
- c.Furnish a workplace free from recognized hazards likely to cause death or serious harm
- d.Guarantee that no worker will ever be injured on the job
Answer: c
Explanation: Section 5(a)(1), the General Duty Clause, requires each employer to furnish a place of employment free from recognized hazards that are causing or likely to cause death or serious physical harm. It applies especially when no specific standard covers a hazard. It is not an absolute guarantee against all injury.
3. Introduction to OSHA
If an employer receives an OSHA citation, what are they generally required to do?
- a.Post the citation at or near the location of the violation and correct the hazard by the abatement date
- b.Immediately shut down the entire company permanently
- c.Ignore it unless a worker was seriously injured
- d.Pay the fine directly to the workers who reported it
Answer: a
Explanation: After a citation is issued, the employer must post it at or near the place where the violation occurred and abate (correct) the hazard by the deadline listed. Employers may contest citations, but they cannot simply ignore them. Penalties are paid to OSHA, not to individual workers.
4. Focus Four Hazards
In construction, at what height does OSHA generally require fall protection for workers?
- a.10 feet
- b.4 feet
- c.6 feet
- d.20 feet
Answer: c
Explanation: For most construction work, OSHA requires fall protection at heights of 6 feet or more above a lower level. (Note the general industry trigger is 4 feet and scaffolds is 10 feet, but construction's general threshold is 6 feet.) Falls are the number one cause of construction deaths.
5. Focus Four Hazards
Which practice best helps prevent electrocution on a construction site?
- a.Using metal ladders near overhead power lines to save time
- b.Removing the grounding prong from a plug so tools fit any outlet
- c.Working on energized circuits without turning off the power
- d.Using ground-fault circuit interrupters (GFCIs) and maintaining safe distances from power lines
Answer: d
Explanation: Using GFCIs, keeping a safe clearance from overhead and buried power lines, and following lockout/tagout to de-energize circuits are key ways to prevent electrocution. Removing grounding prongs, using metal ladders near lines, or working live all increase the danger.
6. PPE & Lifesaving Equipment
In the hierarchy of hazard controls, where does personal protective equipment (PPE) rank?
- a.It is the first and most preferred control method
- b.It is equal in preference to eliminating the hazard
- c.It is the last line of defense, used when other controls cannot fully protect the worker
- d.It is only used during OSHA inspections
Answer: c
Explanation: PPE is the least preferred control and the last line of defense. Employers should first try to eliminate or substitute the hazard, then use engineering controls, then administrative/work-practice controls, and finally rely on PPE to protect against remaining risk.
7. PPE & Lifesaving Equipment
When should a worker inspect PPE such as a hard hat or fall protection harness?
- a.Only once when it is first purchased
- b.Before each use, checking for cracks, damage, or wear
- c.Only after it has already failed
- d.Only when an OSHA inspector requests it
Answer: b
Explanation: PPE should be inspected before each use for cracks, dents, frays, damage, or excessive wear, and damaged equipment must be removed from service. A cracked hard hat or frayed harness webbing may fail when it is needed most, so routine inspection is essential.
8. Health Hazards in Construction
Which construction activity is a common source of hazardous respirable crystalline silica dust?
- a.Sweeping a clean office floor
- b.Painting a wall with a roller
- c.Cutting, grinding, or drilling concrete, brick, or stone
- d.Installing carpet tiles
Answer: c
Explanation: Cutting, grinding, drilling, or crushing concrete, brick, stone, and mortar releases respirable crystalline silica, which can cause silicosis, lung cancer, and other diseases. Controls include wet methods, vacuum dust collection, and respirators as required by OSHA's silica standard.
9. Health Hazards in Construction
Under the Globally Harmonized System (GHS) used in HazCom, what is the purpose of pictograms on a chemical label?
- a.To show the price of the chemical
- b.To indicate the manufacturer's phone number
- c.To display the delivery date
- d.To quickly communicate the type of hazard through a standardized symbol
Answer: d
Explanation: GHS pictograms are standardized symbols inside a red diamond that quickly convey hazard types, such as flame for flammables, skull and crossbones for acute toxicity, or a health-hazard symbol. Along with signal words, hazard statements, and precautionary statements, they help workers recognize dangers at a glance.
10. Electives
Before working in a trench 5 feet or deeper, what must generally be in place unless the trench is made entirely of stable rock?
- a.A protective system such as sloping, benching, shoring, or a trench shield
- b.A fresh coat of paint on the walls
- c.At least three workers standing inside at all times
- d.A ladder placed 50 feet away
Answer: a
Explanation: Trenches 5 feet or deeper generally require a protective system (sloping, benching, shoring, or shielding) designed to prevent cave-ins, unless the excavation is entirely in stable rock. A competent person must inspect the excavation daily and as conditions change, and a safe means of egress must be within 25 feet of workers.