OSHA 510 EXAM QUESTIONS WITH
VERIFIED ANSWERS 2026 LATEST
UPDATE
What is combustion? - Answer- Any chemical process that involves oxidation sufficient
to produce light or heat
What does flammable mean? - Answer- Capable of being easily ignited, burning
intensely, or having a rapid rate of flame spread
What is considered flammable liquid? - Answer- Any liquid having a vapor pressure not
exceeding 40 pounds per square inch at 100F...
How many categories of flammable liquids are there? - Answer- 4
What is a flash point? - Answer- Of a liquid means the temperature at which it gives of
vapors sufficient to form an ignitable mixture with the air near the surface of the liquid or
within the vessel
What is a safety can? - Answer- An approved closed container no more than 5 gallons,
has a flash arresting screen, spring closing lid, and spout cover
Accident prevention signs and tags must remain (BLANK) at all times when work is
being performed and be (BLANK) when the hazard no longer exists? - Answer- Visible
and removed
What is a barricade? - Answer- An obstruction to deter the passage of persons or
vehicles
What are signs? - Answer- The warnings of hazard, temporarily or permanently affixed
or placed, at locations where hazards exist
What are signals? - Answer- Moving signs, provided by workers, such as flaggers, or by
devices, such as flashing lights, to warn of possible or existing hazards
What are tags? - Answer- temporary signs usually attached to a piece of equipment or
part of a structure, to warn of existing or immediate hazards
, What should be marked for modular panels, prefabricated structures, and similar
material to indicate the safe working loads and shall be proof tested prior to use to what
percent of their rated load? - Answer- Special custom design grabs, hooks, clamps, or
other lifting accesories
Each day before use who should inspect the slings and all fastening attachments for
damages or defect? - Answer- Competent person designated by employer
In what condition does all hand and power tools must be maintained? - Answer- Safe
condition
Wrenches shall not be used if jaws are in what condition? - Answer- Sprung to the point
that slippage occurs
Impact tools, drift pins, wedges, and chisels must be kept free of what? - Answer-
Mushroomed heads
Oxygen + Oil = - Answer- Flame explosion
What does oxygen cylinders and fittings have to be kept away from? - Answer- Oil or
grease
What is the minimum length a cable has to be free from splices or repair (from electrode
holder to end) is permitted to be used? - Answer- 10 feet
In order to protect employees working in the vicinity of direct rays of arc, what must be
put up? - Answer- Shielding of non combustible or flame proof screens
Live parts of electric equipment operating at what voltage shall be guarded against
accidental contact by cabinets - Answer- 50 volts or more
The OSHA act was signed by what president? - Answer- Richard Nixon
What date was the OSHA act signed? - Answer- December 29, 1970
When did the OSHA agency actually come into being? - Answer- April 28, 1971
What does OSHA stand for? - Answer- Occupational Safety and Health Administration
What is OSHA's mission? - Answer- To assure safe and healthful working conditions for
working men and women by setting and enforcing standards and by providing training,
outreach, education, and assistance
What type of agency is OSHA? - Answer- An agency of the U.S. department of labor
VERIFIED ANSWERS 2026 LATEST
UPDATE
What is combustion? - Answer- Any chemical process that involves oxidation sufficient
to produce light or heat
What does flammable mean? - Answer- Capable of being easily ignited, burning
intensely, or having a rapid rate of flame spread
What is considered flammable liquid? - Answer- Any liquid having a vapor pressure not
exceeding 40 pounds per square inch at 100F...
How many categories of flammable liquids are there? - Answer- 4
What is a flash point? - Answer- Of a liquid means the temperature at which it gives of
vapors sufficient to form an ignitable mixture with the air near the surface of the liquid or
within the vessel
What is a safety can? - Answer- An approved closed container no more than 5 gallons,
has a flash arresting screen, spring closing lid, and spout cover
Accident prevention signs and tags must remain (BLANK) at all times when work is
being performed and be (BLANK) when the hazard no longer exists? - Answer- Visible
and removed
What is a barricade? - Answer- An obstruction to deter the passage of persons or
vehicles
What are signs? - Answer- The warnings of hazard, temporarily or permanently affixed
or placed, at locations where hazards exist
What are signals? - Answer- Moving signs, provided by workers, such as flaggers, or by
devices, such as flashing lights, to warn of possible or existing hazards
What are tags? - Answer- temporary signs usually attached to a piece of equipment or
part of a structure, to warn of existing or immediate hazards
, What should be marked for modular panels, prefabricated structures, and similar
material to indicate the safe working loads and shall be proof tested prior to use to what
percent of their rated load? - Answer- Special custom design grabs, hooks, clamps, or
other lifting accesories
Each day before use who should inspect the slings and all fastening attachments for
damages or defect? - Answer- Competent person designated by employer
In what condition does all hand and power tools must be maintained? - Answer- Safe
condition
Wrenches shall not be used if jaws are in what condition? - Answer- Sprung to the point
that slippage occurs
Impact tools, drift pins, wedges, and chisels must be kept free of what? - Answer-
Mushroomed heads
Oxygen + Oil = - Answer- Flame explosion
What does oxygen cylinders and fittings have to be kept away from? - Answer- Oil or
grease
What is the minimum length a cable has to be free from splices or repair (from electrode
holder to end) is permitted to be used? - Answer- 10 feet
In order to protect employees working in the vicinity of direct rays of arc, what must be
put up? - Answer- Shielding of non combustible or flame proof screens
Live parts of electric equipment operating at what voltage shall be guarded against
accidental contact by cabinets - Answer- 50 volts or more
The OSHA act was signed by what president? - Answer- Richard Nixon
What date was the OSHA act signed? - Answer- December 29, 1970
When did the OSHA agency actually come into being? - Answer- April 28, 1971
What does OSHA stand for? - Answer- Occupational Safety and Health Administration
What is OSHA's mission? - Answer- To assure safe and healthful working conditions for
working men and women by setting and enforcing standards and by providing training,
outreach, education, and assistance
What type of agency is OSHA? - Answer- An agency of the U.S. department of labor
