Climate Change MCQs Set 17 (200+ Questions with Answers) Posted on March 22, 2026March 23, 2026Author agropublishers 0 Climate Change MCQs Set 17 (200+ Questions with Answers) 1. The average atmospheric lifetime of methane is approximately _____________ 9–12 years 50–70 years More than 100 years 1–2 years 2. The Antarctic Circle is located at approximately ___________ latitude 66.5° N 66.5° S 23.5° S 90° S 3. Which statement best describes methane (CH₄) in the climate system? A gas with no significant contribution to global warming A low global warming potential gas with a long atmospheric lifetime A gas emitted exclusively from natural sources A high global warming potential gas with a relatively short atmospheric lifetime 4. In atmospheric science, aerosols are best defined as ______________ Radioactive components in the atmosphere Liquid droplets are present only within clouds Suspended solid or liquid particles affecting radiation balance Gaseous emissions only 5. What is the primary role of negative feedback in the climate system? Stabilizing the climate system by counteracting changes Increasing climate variability Accelerating ice melting Amplifying warming trends 6. Tropospheric ozone (O₃) acts __________ in the climate system Solely as an air pollutant As both an air pollutant and a greenhouse gas Has no significant environmental role As a greenhouse gas 7. Precision fertilizer application helps reduce N₂O emissions False True 8. Which climatic zone lies between 0° and 20° latitude? Temperate Subtropical Polar Tropical 9. Global Warming Potential (GWP) is a metric used to quantify ___________ Changes in atmospheric pressure Relative heat-trapping ability of greenhouse gases over a specified time horizon Total global carbon emissions Absolute increase in global temperature 10. Within the normal physiological range, the rate of photosynthesis generally doubles with approximately every ______ increase in temperature 15°C 5°C 20°C 10°C Loading … Question 1 of 10 Climate Change MCQs Set 17 (200+ Questions with Answers)
