Question detail
What are oxides of nitrogen, and how are they formed in engines?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Common atmospheric pollutants and their sources
Question
What are oxides of nitrogen, and how are they formed in engines?
Answer
Oxides of nitrogen are gases formed when nitrogen and oxygen react together at high temperatures, such as those found in car engines. This reaction occurs during the combustion process, particularly in internal combustion engines.
Explanation
A strong answer should directly address the approved learning objective to explain that oxides of nitrogen form when nitrogen and oxygen react at high temperatures in engines. This question belongs to Atmospheric pollutants from fuels within Common atmospheric pollutants and their sources, so the response should use that exact curriculum context rather than a generic statement. The answer is correct when it names the key idea, explains the link to oxides of nitrogen, and keeps the wording specific to AQA GCSE revision.
Common mistake
Misunderstanding Nitrogen Oxides Formation
Students often confuse the formation of oxides of nitrogen with other pollutants, thinking they are produced from fuel impurities rather than from the reaction of nitrogen and oxygen at high temperatures.
Remember that oxides of nitrogen specifically form when nitrogen and oxygen react at high temperatures, such as in engine combustion, and are distinct from pollutants formed from fuel impurities.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.