If a mixture containing air and a...

If a mixture containing air and a...

Question 1 of 270705eccef9ebacbc34ba4d465d0

If a mixture containing air and a concentration of flammable vapor, is capable of ignition when exposed to a spark or other source of ignition, it is said to be __________.

Question 1 of 27070

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Q

If a mixture containing air and a concentration of flammable vapor, is capable of ignition when exposed to a spark or other source of ignition, it is said to be __________.

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🔍 Key Concepts

• Flammable range and what it means for a vapor–air mixture • Difference between too rich / too lean mixtures and ignitable mixtures • Meaning of auto-ignition temperature versus ignition from a spark

💭 Think About

• Ask yourself: when is a vapor–air mixture actually able to burn or explode if a spark is introduced—what term describes that condition? • Which option describes a range of concentrations, and which describe a single point or limit? • Which choice refers to temperature conditions versus concentration conditions?

✅ Before You Answer

• Verify which term refers to a concentration range between the lower and upper explosive limits where ignition is possible. • Check that auto ignition point involves no external spark or flame—only temperature. • Confirm that a mixture above the upper explosive limit is generally too rich to ignite under normal conditions.