Question detail

How do oxides of nitrogen contribute to environmental issues?

Try the question, check the answer, then read the explanation to understand the curriculum point.

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At a glance

MCQ

Type

practice

Style

Topic

Common atmospheric pollutants and their sources

Question

A. They cause acid rain
B. They reduce oxygen levels in the atmosphere
C. They promote plant growth
D. They are harmless to the environment

Answer

The correct option is They cause acid rain. This answer is correct because it matches the approved learning objective to explain why carbon monoxide is toxic because it reduces the ability of blood to carry oxygen in the subtopic Properties and effects of atmospheric pollutants.

Explanation

The correct option is They cause acid rain. They cause acid rain is correct because it directly supports the approved learning objective to explain why carbon monoxide is toxic because it reduces the ability of blood to carry oxygen. This belongs to the subtopic Properties and effects of atmospheric pollutants within Common atmospheric pollutants and their sources, so the explanation must stay tied to that curriculum context. The other options are incorrect because they either do not answer this learning objective, use a vague statement, or move away from Properties and effects of atmospheric pollutants.

Common mistake

Misunderstanding Carbon Monoxide Toxicity

Students often think carbon monoxide is toxic because it is a poison, without understanding its specific effect on blood.

Clarify that carbon monoxide binds to hemoglobin in red blood cells, reducing their ability to carry oxygen, which is the reason for its toxicity.

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