OPSC OCS 2022 · Question 84 of 98
General Studies
Carbon Dioxide (CO2): A major greenhouse gas produced through the combustion of fossil fuels and other human activities, contributing to global warming and climate change. Methane (CH4): A potent greenhouse gas released during the production and transport of coal, oil, and natural gas. It has a higher warming potential than carbon dioxide over a short time frame. Nitrous Oxide (N2O): Emitted from agricultural and industrial activities, as well as the burning of fossil fuels and solid waste. It contributes to both climate change and ozone layer depletion. Ozone (O3): While ozone in the stratosphere protects life on Earth by blocking ultraviolet radiation, ground-level ozone is a greenhouse gas and air pollutant formed by chemical reactions between oxides of nitrogen and volatile organic compounds. Water Vapour (H2O): The most abundant greenhouse gas in the Earth's atmosphere. While human activities do not directly control water vapour levels, it is a significant contributor to the natural greenhouse effect."
Source: OPSC OCS (2022) Preliminary GS Paper-I; answers per Apti Plus Academy compilation (to be verified against official OPSC key)
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