COF C42 Exam with all Correct & 100% Verified Answers |
Latest Version |Already Graded A+
ACID ✔Correct Answers-A solution that has a pH less than 7.0
BASE ✔Correct Answers-A solution that has a pH greater than 7.0, sometimes called caustic or
alkaline.
BOILING POINT ✔Correct Answers-The temperature at which the vapor pressure of a liquid
equals the atmospheric pressure of 14.7 pounds per square inch (psi) or 760 mm of mercury.
Where a boiling point is unavailable for the material in question or for mixtures which do not
have a constant boiling point, for the purposes of this classification, the 20-percent evaporated
point of a distillation performed in accordance with ASTM D 86 shall be used as the boiling point
of the liquid.
CEILING LIMIT ✔Correct Answers-The maximum concentration of an airborne contaminant to
which one may be exposed shall be as established by the regulations of the United States
Department of Labor, as set forth in 29 CFR Part 1910.1000, or if not listed therein, the ceiling
Recommended Exposure Limit (REL-C) concentrations published by the U.S. National Institute
for Occupational Safety and Health (NIOSH), the Threshold Limit Value — Ceiling (TLV-C)
concentrations published by the American Conference of Governmental Industrial Hygienists
(ACGIH), the ceiling Workplace Environmental Exposure Level (WEEL-Ceiling) Guides published
by the American Industrial Hygiene Association (AIHA), or other approved standard.
CHEMICAL ✔Correct Answers-An element, chemical compound or mixture of elements or
compounds or both.
CHEMICAL NAME ✔Correct Answers-The scientific designation of a chemical in accordance
with the nomenclature system developed by the International Union of Pure and Applied
Chemistry, the Chemical Abstracts Service rules of nomenclature, or a name that will clearly
identify a chemical for the purpose of conducting an evaluation.
CLOSED CONTAINER ✔Correct Answers-A container sealed by means of a lid or other device
capable of preventing the escape of liquid, vapor or dusts in the ordinary course of storage,
handling or use.
CONTAINER ✔Correct Answers-For solid and liquid hazardous materials, a vessel of 60 gallons
or less in capacity used for storage or transportation. For compressed gases, a cylinder, pressure
vessel or tank designed for pressures greater than one atmosphere at 68°F. Pipes, piping
systems, engines and engine fuel tanks associated with solid or liquid hazardous materials or
compressed gases, shall not be deemed to be containers if in active use.
, COMBUSTIBLE LIQUID ✔Correct Answers-A liquid, other than a compressed gas or cryogenic
fluid, having a closed cup flash point at or above 100°F (38°C).
Class II Combustible Liquids ✔Correct Answers-Liquids having a closed cup flash point at or
above 100°F (38°C) and below 140°F (60°C).
Class IIIA Combustible Liquids ✔Correct Answers-Liquids having a closed cup flash point at or
above 140°F (60°C) and below 200°F (93°C).
Class IIIB Combustible Liquids ✔Correct Answers-Liquids having closed cup flash points at or
above 200°F (93°C).
CONTAINMENT SYSTEM ✔Correct Answers-A gas-tight recovery system comprised of devices
or equipment which, when placed over or around the portion of the compressed gas container
that is leaking, stops or controls the escape of gas from the container.
CONTAINMENT VESSEL ✔Correct Answers-A gas-tight vessel which, when installed or placed
over or around a leaking compressed gas container, confines the container and the gas leaking
there from.
CONTROL AREA ✔Correct Answers-Spaces within a building that are enclosed and bounded
by exterior walls, fire walls, fire barriers and roofs, or a combination thereof, where quantities of
hazardous materials not exceeding the maximum allowable quantities per control area are
stored, handled or used, including any dispensing.
CORROSIVE MATERIAL ✔Correct Answers-A material that causes full thickness destruction of
human skin at the site of contact within a specified period of time when tested by methods set
forth in Department of Transportation (DOT) regulations 49 CFR Sections 173.136 and 173.137,
or a liquid that has a severe corrosion rate on steel or aluminum based on the criteria set forth
in DOT regulations 49 CFR Section 173.137(c) (2).
DEFLAGRATION ✔Correct Answers-An exothermic reaction, such as the extremely rapid
oxidation of a flammable dust or vapor in air, in which the reaction progresses through the
unburned material at a rate less than the velocity of sound, can have an explosive effect.
DETONATION ✔Correct Answers-An exothermic reaction with explosive effect that utilizes
shock compression as the principal heating mechanism and generates a shock wave in the
material that establishes and maintains a reaction that progresses through the material at a rate
greater than the velocity of sound.
DESIGN PRESSURE ✔Correct Answers-The maximum gauge pressure that a pressure vessel,
device, component or system is designed to withstand safely under the temperature and
conditions of use.
Latest Version |Already Graded A+
ACID ✔Correct Answers-A solution that has a pH less than 7.0
BASE ✔Correct Answers-A solution that has a pH greater than 7.0, sometimes called caustic or
alkaline.
BOILING POINT ✔Correct Answers-The temperature at which the vapor pressure of a liquid
equals the atmospheric pressure of 14.7 pounds per square inch (psi) or 760 mm of mercury.
Where a boiling point is unavailable for the material in question or for mixtures which do not
have a constant boiling point, for the purposes of this classification, the 20-percent evaporated
point of a distillation performed in accordance with ASTM D 86 shall be used as the boiling point
of the liquid.
CEILING LIMIT ✔Correct Answers-The maximum concentration of an airborne contaminant to
which one may be exposed shall be as established by the regulations of the United States
Department of Labor, as set forth in 29 CFR Part 1910.1000, or if not listed therein, the ceiling
Recommended Exposure Limit (REL-C) concentrations published by the U.S. National Institute
for Occupational Safety and Health (NIOSH), the Threshold Limit Value — Ceiling (TLV-C)
concentrations published by the American Conference of Governmental Industrial Hygienists
(ACGIH), the ceiling Workplace Environmental Exposure Level (WEEL-Ceiling) Guides published
by the American Industrial Hygiene Association (AIHA), or other approved standard.
CHEMICAL ✔Correct Answers-An element, chemical compound or mixture of elements or
compounds or both.
CHEMICAL NAME ✔Correct Answers-The scientific designation of a chemical in accordance
with the nomenclature system developed by the International Union of Pure and Applied
Chemistry, the Chemical Abstracts Service rules of nomenclature, or a name that will clearly
identify a chemical for the purpose of conducting an evaluation.
CLOSED CONTAINER ✔Correct Answers-A container sealed by means of a lid or other device
capable of preventing the escape of liquid, vapor or dusts in the ordinary course of storage,
handling or use.
CONTAINER ✔Correct Answers-For solid and liquid hazardous materials, a vessel of 60 gallons
or less in capacity used for storage or transportation. For compressed gases, a cylinder, pressure
vessel or tank designed for pressures greater than one atmosphere at 68°F. Pipes, piping
systems, engines and engine fuel tanks associated with solid or liquid hazardous materials or
compressed gases, shall not be deemed to be containers if in active use.
, COMBUSTIBLE LIQUID ✔Correct Answers-A liquid, other than a compressed gas or cryogenic
fluid, having a closed cup flash point at or above 100°F (38°C).
Class II Combustible Liquids ✔Correct Answers-Liquids having a closed cup flash point at or
above 100°F (38°C) and below 140°F (60°C).
Class IIIA Combustible Liquids ✔Correct Answers-Liquids having a closed cup flash point at or
above 140°F (60°C) and below 200°F (93°C).
Class IIIB Combustible Liquids ✔Correct Answers-Liquids having closed cup flash points at or
above 200°F (93°C).
CONTAINMENT SYSTEM ✔Correct Answers-A gas-tight recovery system comprised of devices
or equipment which, when placed over or around the portion of the compressed gas container
that is leaking, stops or controls the escape of gas from the container.
CONTAINMENT VESSEL ✔Correct Answers-A gas-tight vessel which, when installed or placed
over or around a leaking compressed gas container, confines the container and the gas leaking
there from.
CONTROL AREA ✔Correct Answers-Spaces within a building that are enclosed and bounded
by exterior walls, fire walls, fire barriers and roofs, or a combination thereof, where quantities of
hazardous materials not exceeding the maximum allowable quantities per control area are
stored, handled or used, including any dispensing.
CORROSIVE MATERIAL ✔Correct Answers-A material that causes full thickness destruction of
human skin at the site of contact within a specified period of time when tested by methods set
forth in Department of Transportation (DOT) regulations 49 CFR Sections 173.136 and 173.137,
or a liquid that has a severe corrosion rate on steel or aluminum based on the criteria set forth
in DOT regulations 49 CFR Section 173.137(c) (2).
DEFLAGRATION ✔Correct Answers-An exothermic reaction, such as the extremely rapid
oxidation of a flammable dust or vapor in air, in which the reaction progresses through the
unburned material at a rate less than the velocity of sound, can have an explosive effect.
DETONATION ✔Correct Answers-An exothermic reaction with explosive effect that utilizes
shock compression as the principal heating mechanism and generates a shock wave in the
material that establishes and maintains a reaction that progresses through the material at a rate
greater than the velocity of sound.
DESIGN PRESSURE ✔Correct Answers-The maximum gauge pressure that a pressure vessel,
device, component or system is designed to withstand safely under the temperature and
conditions of use.
