Which gas is listed as an explosive gas?

Enhance your skills with the CWEA Grade 2 Lab Analyst Test. Study with flashcards and multiple choice questions, each offering hints and explanations. Prepare successfully for your exam!

Multiple Choice

Which gas is listed as an explosive gas?

Explanation:
Recognizing gases that can form explosive mixtures with air. Among the options, propane is a flammable hydrocarbon that can ignite and explode when its concentration in air falls within a certain range. Propane’s flammable limits in air are roughly 2% to 10%, so many air–propane mixtures are capable of detonation or rapid flame if an ignition source is present. The other gases here are not explosive in the same way. Argon and nitrogen are inert and do not burn or explode. Oxygen supports combustion, but by itself it isn’t an explosive gas; it makes fires burn hotter and faster when fuels are present, but it doesn’t form an explosion risk on its own. So propane is the gas listed as explosive.

Recognizing gases that can form explosive mixtures with air. Among the options, propane is a flammable hydrocarbon that can ignite and explode when its concentration in air falls within a certain range. Propane’s flammable limits in air are roughly 2% to 10%, so many air–propane mixtures are capable of detonation or rapid flame if an ignition source is present.

The other gases here are not explosive in the same way. Argon and nitrogen are inert and do not burn or explode. Oxygen supports combustion, but by itself it isn’t an explosive gas; it makes fires burn hotter and faster when fuels are present, but it doesn’t form an explosion risk on its own. So propane is the gas listed as explosive.

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