In accordance with U.S. regulations which of...

Question 1 / 2066636ee728f7522a1c517385

Question 1 of 2066636ee728f7522a1c517385

In accordance with U.S. regulations which of the following is the proper label name for a class 2.3 substance?

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Question 1 of 20

66636ee728f7522a1c517385

In accordance with U.S. regulations which of the following is the proper label name for a class 2.3 substance?

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🔍 Key Concepts

• 49 CFR Hazard Class 2 – gases • Difference between flammable, non-flammable, and poisonous/toxic gases in labeling • How subsidiary risks (like toxicity) change the primary label name

💭 Think About

• Look at how Class 2 is broken down into subclasses (2.1, 2.2, 2.3) and what physical/health risk each one represents. • Ask: which option describes a health hazard from breathing the gas, rather than a fire or pressure hazard? • Consider which labels refer to how the gas burns vs. how it harms people.

✅ Before You Answer

• Match Class 2.1 to its common label name, then eliminate any answer that clearly belongs there. • Match Class 2.2 to its common label name, then eliminate any answer that clearly belongs there. • The remaining choice should line up with a gas whose primary danger is toxicity to humans, not flammability or just being under pressure.

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Question 1 of 20

In accordance with U.S. regulations which of the following is the proper label name for a class 2.3 substance?

Flammable gases

Poison gases

Non-flammable gases

Inert gases

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