Comprehension

Read the following passage and answer the question:
The global average surface temperature has increased by approximately 0.8° C over the last century. Many countries have experienced increase in rainfall, particularly in those situated in the mid to high latitudes. In some regions, the frequency and intensity of droughts have increased in recent decades. All these are signs of climate change, which making it more difficult for mankind survival. Projections of future climate change have predicted that the global mean surface temperature will rise by 1.4° C to 5.8° C. The frequency of weather extremes is likely to increase. Global mean sea level is projected to rise by 9 to 88 cm by the year 2100. Changes in climate may affect the distribution of vector species which in turn will increase the spread of diseases, such as malaria and filariasis, to new areas which lack a strong public health infrastructure.

Question: 1

Present day problem of climate change is NOT primarily due to:

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Climate change today is driven by human activities—not natural phenomena like volcanoes.
Updated On: Apr 28, 2025
  • Increase in biomass burning
  • Increase in fossil fuel combustion
  • Increase in volcanic activities
  • Increase in greenhouse gas emissions
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The Correct Option is C

Solution and Explanation

While volcanic activity can influence climate temporarily, it is not a primary driver of current climate change. The major contributors are human activities, including fossil fuel combustion, biomass burning, and greenhouse gas emissions.
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Question: 2

Climate change related impacts could lead to:

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Link rising sea levels and weather extremes with population displacement—an often overlooked climate consequence.
Updated On: Apr 28, 2025
  • Better life standard in developing countries
  • Sustained economic development
  • Displacement of a large people
  • Decrease in the spread of diseases
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The Correct Option is C

Solution and Explanation

The passage mentions rising sea levels, extreme weather, and disease spread—all factors that contribute to large-scale displacement. Hence, displacement is a key climate-related impact.
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Question: 3

Which of the following gases contribute maximally to global warming?

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When asked about "maximum" contribution to global warming, go with CO\textsubscript{2}—the most abundant and impactful GHG.
Updated On: Apr 28, 2025
  • N2O
  • CFCs
  • CO2
  • O3
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The Correct Option is C

Solution and Explanation

Carbon dioxide (CO\textsubscript{2}) is the most significant greenhouse gas contributing to global warming due to its high concentration from human activities such as fossil fuel combustion. Although others like N\textsubscript{2}O and CFCs are potent, CO\textsubscript{2} has the largest overall impact.
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Question: 4

Which of the following gas is NOT responsible for anthropogenic global warming?

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Know your GHGs! NO\textsubscript{2} is more associated with pollution than direct greenhouse warming.
Updated On: Apr 28, 2025
  • CO2
  • CH4
  • NO2
  • N2O
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The Correct Option is C

Solution and Explanation

NO\textsubscript{2} (Nitrogen dioxide) is primarily a pollutant related to smog and acid rain but is not a major contributor to anthropogenic global warming. The other gases listed—CO\textsubscript{2}, CH\textsubscript{4}, and N\textsubscript{2}O—are well-known greenhouse gases linked to human activity.
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Question: 5

Climate change does NOT lead to:

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Differentiate between causes and effects: climate change affects Earth’s systems, not external forces like solar activity.
Updated On: Apr 28, 2025
  • Salt water intrusion in coastal aquifer
  • Geopolitical dispute
  • Spread of vector-borne diseases
  • Increase in solar activity of sun
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The Correct Option is D

Solution and Explanation

Climate change is driven by factors such as greenhouse gas emissions and leads to effects like sea-level rise, water salinity, disease spread, and even political tensions over resources. However, it does not influence solar activity—this is a natural phenomenon unrelated to climate change.
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