Toxic gas heavier than air with a rotten egg odor.

Study for the Texas Collections 1 Test. Review questions and in-depth explanations to enhance your understanding and boost confidence. Be prepared for your test!

Multiple Choice

Toxic gas heavier than air with a rotten egg odor.

Explanation:
The key idea here is matching a toxic gas by both its odor and its tendency to linger low in the environment. A rotten-egg smell points to hydrogen sulfide, which is a gas heavier than air and can accumulate in low-lying, poorly ventilated spaces. It is highly toxic, so even small exposures are dangerous, and at higher concentrations it can quickly disable your sense of smell, making the odor an unreliable warning. Why the others don’t fit: carbon dioxide is heavier than air but has no odor, methane is odorless and lighter than air, and chlorine gas, while toxic and heavier than air, has a sharp, acrid odor—not the rotten-egg smell in question.

The key idea here is matching a toxic gas by both its odor and its tendency to linger low in the environment. A rotten-egg smell points to hydrogen sulfide, which is a gas heavier than air and can accumulate in low-lying, poorly ventilated spaces. It is highly toxic, so even small exposures are dangerous, and at higher concentrations it can quickly disable your sense of smell, making the odor an unreliable warning.

Why the others don’t fit: carbon dioxide is heavier than air but has no odor, methane is odorless and lighter than air, and chlorine gas, while toxic and heavier than air, has a sharp, acrid odor—not the rotten-egg smell in question.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy