Methane is colorless and odorless. Which option correctly describes its appearance and odor?

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Prepare for the CWEA Electrical/Instrumentation (E/I) Grade 1 Test. Use flashcards and multiple-choice questions, each with hints and explanations. Get ready for your exam!

Multiple Choice

Methane is colorless and odorless. Which option correctly describes its appearance and odor?

Explanation:
Methane’s inherent property is that it is a gas with no color and no odor. Pure methane is colorless and odorless, so the description that matches its natural state is colorless and odorless. The other options describe characteristics that methane does not have by itself—it's not colored or visible, and it does not carry a strong smell unless an odorant is added for leak detection in practical natural gas systems.

Methane’s inherent property is that it is a gas with no color and no odor. Pure methane is colorless and odorless, so the description that matches its natural state is colorless and odorless. The other options describe characteristics that methane does not have by itself—it's not colored or visible, and it does not carry a strong smell unless an odorant is added for leak detection in practical natural gas systems.

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