OSHA 10 Construction Practice Test 2026: Test próbny 3

Test próbny 3 z 3 – OSHA 10 Construction Practice Test: kolejne pytania z odpowiedziami i wyjaśnieniami (liczba pytań: 30).

BHP
Stany Zjednoczone
Pytania: 80
Sprawdzono 10 października 2026

Pytanie 1 z 30
In general, at what depth must a trench have a protective system to prevent cave-ins?
- 20 feet or deeper, in any type of soil
- 10 feet or deeper, in any type of soil
- 5 feet or deeper, unless in stable rock
- 2 feet or deeper, in any type of soil
Pokaż odpowiedź
Odpowiedź: C. 5 feet or deeper, unless in stable rock
Under 1926.652(a)(1), protective systems are required for excavations 5 feet or deeper, except in stable rock. Shallower trenches need one if a competent person sees signs of a cave-in.
Pytanie 2 z 30
For excavations deeper than 20 feet, who must design the protective system?
- The property owner
- Any worker with an OSHA 10 card
- A registered professional engineer
- The excavator operator
Pokaż odpowiedź
Odpowiedź: C. A registered professional engineer
Sloping, benching and support systems for excavations over 20 feet deep must be designed by a registered professional engineer.
Pytanie 3 z 30
Which are the three main ways to protect workers in a trench from a cave-in?
- Ladders, ropes and harnesses
- Sloping, shoring and shielding
- Signs, cones and tape
- Fans, lights and pumps
Pokaż odpowiedź
Odpowiedź: B. Sloping, shoring and shielding
OSHA says to slope or bench the walls, shore them with supports, or shield workers with trench boxes.
Pytanie 4 z 30
In a trench 4 feet or deeper, how far may a worker have to travel to reach a ladder, stairway or ramp?
- As far as needed
- No more than 50 feet
- No more than 25 feet
- No more than 100 feet
Pokaż odpowiedź
Odpowiedź: C. No more than 25 feet
Under 1926.651(c)(2), a safe means of egress must be within 25 feet of lateral travel in trenches 4 feet or more deep.
Pytanie 5 z 30
How far from the edge of an excavation must spoil piles and equipment be kept?
- They can be placed right at the edge
- At least 1 foot
- At least 2 feet
- At least 6 inches
Pokaż odpowiedź
Odpowiedź: C. At least 2 feet
Under 1926.651(j)(2), materials and equipment must be at least 2 feet from the edge, or held back by retaining devices.
Pytanie 6 z 30
Who must inspect an excavation daily, before work starts and after rain?
- A competent person
- A city building inspector
- Any worker on site
- The truck driver
Pokaż odpowiedź
Odpowiedź: A. A competent person
Daily inspections of excavations, adjacent areas and protective systems must be made by a competent person.
Pytanie 7 z 30
A competent person finds a hazard in a trench. What must happen?
- Workers must get out until it is made safe
- The hazard is noted for next week
- Workers keep going but work faster
- Only new workers leave the trench
Pokaż odpowiedź
Odpowiedź: A. Workers must get out until it is made safe
Under 1926.651(k)(2), exposed employees must be removed until the necessary precautions make the area safe.
Pytanie 8 z 30
When must the air in an excavation be tested before workers go in?
- Never, because trenches are open to the air
- Only in the hot summer months
- Only when there is a bad smell coming from the trench
- When it is over 4 feet deep and bad air could be present
Pokaż odpowiedź
Odpowiedź: D. When it is over 4 feet deep and bad air could be present
Under 1926.651(g)(1), testing is required before entry into such excavations deeper than 4 feet.
Pytanie 9 z 30
What must be done before digging begins?
- Use a pickaxe to feel for lines
- Look for pipes after hitting one
- Nothing; just dig slowly
- Locate underground utilities (call 811)
Pokaż odpowiedź
Odpowiedź: D. Locate underground utilities (call 811)
Under 1926.651(b), underground installations must be located before an excavation is opened. In the U.S., 811 is the call-before-you-dig number.
Pytanie 10 z 30
According to OSHA, what poses the greatest risk to workers' lives in trenching?
- Sunburn
- Cave-ins
- Noise from equipment
- Muddy boots
Pokaż odpowiedź
Odpowiedź: B. Cave-ins
Cave-ins can bury and crush workers in seconds, which is why protective systems are required.
Pytanie 11 z 30
Why must guards stay in place on machines with moving parts?
- They keep the machine warm in cold weather
- They stop body parts and clothing getting caught
- They make the machine look neat and finished
- They make the machine run more quietly
Pokaż odpowiedź
Odpowiedź: B. They stop body parts and clothing getting caught
Missing guards can lead to amputations and deaths. Never remove or bypass a guard.
Pytanie 12 z 30
How can you avoid being caught between moving equipment and a fixed object?
- Stand close so the operator can see you
- Walk behind it while it backs up
- Lean on the equipment to steady it
- Never stand between them
Pokaż odpowiedź
Odpowiedź: D. Never stand between them
Being pinned between equipment and a wall or other object is a common caught-between death.
Pytanie 13 z 30
Who must provide PPE such as hard hats and safety glasses when OSHA standards require them?
- The employer
- The worker
- The general public
- The equipment rental company
Pokaż odpowiedź
Odpowiedź: A. The employer
Under 1926.95, protective equipment must be provided, used and maintained wherever hazards make it necessary.
Pytanie 14 z 30
Before wearing a tight-fitting respirator, what do you need?
- Nothing, any size will do
- Only a quick look in the mirror
- A beard to help the seal
- A medical evaluation and a fit test
Pokaż odpowiedź
Odpowiedź: D. A medical evaluation and a fit test
OSHA's respiratory protection rules require medical evaluation and fit testing before using tight-fitting respirators.
Pytanie 15 z 30
What is OSHA's permissible noise exposure limit in construction for an 8-hour day?
- 120 dBA
- 90 dBA
- 60 dBA
- 75 dBA
Pokaż odpowiedź
Odpowiedź: B. 90 dBA
Table D-2 in 1926.52 sets 90 dBA for an 8-hour duration. Above the limit, controls and hearing protection are needed.
Pytanie 16 z 30
What is OSHA's permissible exposure limit for respirable crystalline silica in construction?
- 50 micrograms per cubic meter (8-hour average)
- 500 micrograms per cubic meter (8-hour average)
- There is no exposure limit for silica
- 5 milligrams per cubic meter (8-hour average)
Pokaż odpowiedź
Odpowiedź: A. 50 micrograms per cubic meter (8-hour average)
The silica standard for construction, 1926.1153, sets a PEL of 50 µg/m³ as an 8-hour time-weighted average.
Pytanie 17 z 30
Which controls help reduce silica dust when cutting concrete?
- A leaf blower to blow the dust away from you
- Water spray or a vacuum dust collector on the tool
- Dry sweeping the area every hour
- Cutting faster so that less dust is made
Pokaż odpowiedź
Odpowiedź: B. Water spray or a vacuum dust collector on the tool
Water and local vacuum extraction capture dust at the source. Dry sweeping and compressed air spread it.
Pytanie 18 z 30
What three things does OSHA's heat illness campaign remind workers they need?
- Radios, lights and alarms
- Gloves, boots and helmets
- Coffee, music and snacks
- Water, rest and shade
Pokaż odpowiedź
Odpowiedź: D. Water, rest and shade
Drinking water often, resting and getting into the shade help prevent heat illness.
Pytanie 19 z 30
Which information must appear on a HazCom shipping label for a hazardous chemical?
- The name of the worker who will use it, the job site, the date and the supervisor
- Only the price, the bar code, the store name, the date of sale and the batch number
- Product identifier, signal word, hazard statements, pictograms, precautionary statements and supplier information
- Only the product name, the date it was made, the batch number and the color
Pokaż odpowiedź
Odpowiedź: C. Product identifier, signal word, hazard statements, pictograms, precautionary statements and supplier information
OSHA's Hazard Communication Standard lists these six label elements.
Pytanie 20 z 30
How many sections does a safety data sheet (SDS) have under OSHA's Hazard Communication Standard?
- 16
- 10
- 25
- 4
Pokaż odpowiedź
Odpowiedź: A. 16
SDSs use a standard 16-section format, so information is always in the same place.
Pytanie 21 z 30
Which two signal words are used on HazCom labels?
- "Poison" and "Safe"
- "Caution" and "Notice"
- "Stop" and "Go"
- "Danger" and "Warning"
Pokaż odpowiedź
Odpowiedź: D. "Danger" and "Warning"
"Danger" is used for more severe hazards and "Warning" for less severe hazards.
Pytanie 22 z 30
Is this environment pictogram required on labels under OSHA's Hazard Communication Standard?
- Yes, but only on gas cylinders
- Yes, on every label
- Yes, but only for food products
- No, it is non-mandatory under OSHA
Pokaż odpowiedź
Odpowiedź: D. No, it is non-mandatory under OSHA
The GHS has nine pictograms, but OSHA lists the environment pictogram (aquatic toxicity) as non-mandatory.
Pytanie 23 z 30
What hazard does this pictogram show on a HazCom label?
- Oxidizers
- Carcinogens
- Flammables
- Corrosives
Pokaż odpowiedź
Odpowiedź: C. Flammables
The flame pictogram covers flammables, pyrophorics, self-heating materials and more.
Pytanie 24 z 30
What does this pictogram warn about on a HazCom label?
- Harm to fish and aquatic life
- Mild skin irritation after contact
- Acute toxicity that can be fatal or toxic
- Gas stored under pressure
Pokaż odpowiedź
Odpowiedź: C. Acute toxicity that can be fatal or toxic
The skull and crossbones means the chemical can be fatal or toxic, even in small amounts.
Pytanie 25 z 30
Which hazards does this pictogram cover under HazCom?
- Mild skin and eye irritation only
- Explosives and organic peroxides
- Gases stored under pressure in cylinders
- Carcinogens, sensitizers and organ toxicity
Pokaż odpowiedź
Odpowiedź: D. Carcinogens, sensitizers and organ toxicity
The health hazard pictogram is for serious health effects, often long-term.
Pytanie 26 z 30
What does this pictogram warn about?
- Skin burns, eye damage and metal corrosion
- Harmful effects on fish and water life
- Flammable gases and liquids
- Gases stored under pressure
Pokaż odpowiedź
Odpowiedź: A. Skin burns, eye damage and metal corrosion
The corrosion pictogram covers skin corrosion and burns, eye damage and corrosion of metals.
Pytanie 27 z 30
Which hazard does this pictogram cover?
- Irritants and skin sensitizers
- Explosion hazards
- Cancer-causing chemicals
- Fatal poisoning
Pokaż odpowiedź
Odpowiedź: A. Irritants and skin sensitizers
The exclamation mark is used for less severe hazards, such as skin and eye irritation.
Pytanie 28 z 30
What does this pictogram on a cylinder mean?
- The contents are frozen food
- The contents are always toxic
- The cylinder is empty
- The contents are a gas under pressure
Pokaż odpowiedź
Odpowiedź: D. The contents are a gas under pressure
The gas cylinder pictogram covers gases under pressure and chemicals under pressure.
Pytanie 29 z 30
What does this pictogram mean?
- An oxidizer that can make a fire worse
- An explosive that can blow up
- A chemical that is safe near heat
- A flammable liquid that burns easily
Pokaż odpowiedź
Odpowiedź: A. An oxidizer that can make a fire worse
Oxidizers give off oxygen. Keep them away from fuels and other combustible materials.
Pytanie 30 z 30
Which hazards does this pictogram cover?
- Carcinogens
- Corrosives and acids
- Explosives and organic peroxides
- Irritants and sensitizers
Pokaż odpowiedź
Odpowiedź: C. Explosives and organic peroxides
The exploding bomb shows a risk of explosion or violent reaction.

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