Which of these pairs of gases are both greenhouse gases?
A - OCR Gateway - GCSE Chemistry - Question 3 - 2019 - Paper 4
Question 3
Which of these pairs of gases are both greenhouse gases?
A. Nitrogen and methane
B. Nitrogen and oxygen
C. Water vapour and methane
D. Water vapour and oxygen
Worked Solution & Example Answer:Which of these pairs of gases are both greenhouse gases?
A - OCR Gateway - GCSE Chemistry - Question 3 - 2019 - Paper 4
Step 1
Identify the greenhouse gases
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Answer
Greenhouse gases are those gases that can absorb and emit infrared radiation, contributing to the greenhouse effect. Common greenhouse gases include carbon dioxide, methane, and water vapour.
Step 2
Analyze each option
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Answer
Nitrogen and methane - Nitrogen is not a greenhouse gas, but methane is.
Nitrogen and oxygen - Neither nitrogen nor oxygen are greenhouse gases.
Water vapour and methane - Both water vapour and methane are greenhouse gases.
Water vapour and oxygen - Water vapour is a greenhouse gas, while oxygen is not.
Step 3
Conclusion
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Answer
The correct answer is option C: Water vapour and methane, as both of these gases are recognized as greenhouse gases.
