Greenhouse gases (GHGs) are atmospheric gases that absorb and emit infrared radiation, causing the greenhouse effect. Common GHGs include carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), water vapor (H2O), and chlorofluorocarbons (CFCs). Nitrogen (N2), which constitutes about 78% of the Earth's atmosphere, and oxygen (O2), which constitutes about 21%, are diatomic molecules with symmetrical structures. They do not absorb thermal infrared radiation effectively, unlike greenhouse gases which have asymmetric structures or multiple atoms enabling them to absorb and re- emit infrared radiation.
Which of the following is not a green house gas ?
Asked in CGPSC Prelims Exam 2024 · UPSC NDA 2 2015 · Topic: Greenhouse Effect and Climate Change (Composition, Sources, and Radiative Forcing of Major Greenhouse Gases (GHGs))
More Environment and Ecology questions
- Which one of the following greenhouse gases is the largest single contributor to anthropogenic radiative forcing?
- Which one of the following is the main natural source of Methane?
- Which one of the following important greenhouse gases is not considered to be largely changed in its amount due to human activities?
- Which one of the following greenhouse gases is man-made?
- Consider the following statements regarding nitrous oxide. 1. Being a short-lived greenhouse gas, it substantially contributes to global warming. 2. When it reaches the stratosphere, it reacts with ozone and depletes it, with an impact comparable to that of CFCs. Which of the above statement/s is/are correct?
- Which of the following are the sources of methane? 1. Biomass burning 2. Wastewater treatment 3. Coal mining 4. Permafrost
- Apart from carbon dioxide, which of the following gases also has a role in climate change ?
- Select the correct option from the codes given below about greenhouse gases from the following: i. Methane ii. Nitrogen iii. Nitrous oxide iv. Water vapours Code :