Q.1 What is the main greenhouse gas responsible for global warming?
Oxygen
Carbon Dioxide
Nitrogen
Hydrogen
Explanation - Carbon dioxide (CO2) traps heat in the atmosphere, leading to global warming. It is released from burning fossil fuels, deforestation, and industrial activities.
Correct answer is: Carbon Dioxide
Q.2 Which human activity is a major contributor to climate change?
Planting trees
Driving fossil fuel vehicles
Cycling
Using solar panels
Explanation - Vehicles powered by fossil fuels emit CO2 and other greenhouse gases that increase global temperatures.
Correct answer is: Driving fossil fuel vehicles
Q.3 What effect does global warming have on sea levels?
Decreases sea levels
No effect
Increases sea levels
Freezes the oceans
Explanation - Global warming melts glaciers and ice caps, and causes thermal expansion of water, leading to rising sea levels.
Correct answer is: Increases sea levels
Q.4 Which international agreement aims to limit global warming to below 2°C?
Kyoto Protocol
Paris Agreement
Montreal Protocol
Geneva Convention
Explanation - The Paris Agreement (2015) is a global pact to reduce greenhouse gas emissions and limit global temperature rise.
Correct answer is: Paris Agreement
Q.5 Which of the following is a direct consequence of climate change?
Increased volcanic eruptions
Stronger magnetic field
More frequent heatwaves
Formation of new planets
Explanation - Rising global temperatures due to climate change increase the frequency and intensity of heatwaves.
Correct answer is: More frequent heatwaves
Q.6 Which gas is released from agriculture and contributes to greenhouse effect?
Methane
Oxygen
Helium
Nitrogen
Explanation - Methane (CH4) is a potent greenhouse gas released from livestock, rice paddies, and decomposition of organic waste.
Correct answer is: Methane
Q.7 What is the main cause of ocean acidification?
Plastic pollution
CO2 absorption by oceans
Oil spills
Overfishing
Explanation - Oceans absorb CO2 from the atmosphere, which reacts with water to form carbonic acid, leading to ocean acidification.
Correct answer is: CO2 absorption by oceans
Q.8 What phenomenon describes the long-term rise in Earth's average temperature?
Climate Change
Global Cooling
Ozone Depletion
Acid Rain
Explanation - Climate change refers to long-term alterations in temperature, precipitation, and other atmospheric patterns on Earth.
Correct answer is: Climate Change
Q.9 Which region is most vulnerable to rising sea levels?
Himalayas
Small island nations
Sahara Desert
Amazon Rainforest
Explanation - Low-lying island nations are highly vulnerable to flooding and erosion caused by rising sea levels.
Correct answer is: Small island nations
Q.10 Which of the following is a renewable energy source that can help reduce global warming?
Coal
Solar
Natural Gas
Petroleum
Explanation - Solar energy generates electricity without emitting greenhouse gases, making it a clean and renewable energy source.
Correct answer is: Solar
Q.11 Which layer of the atmosphere is affected by ozone depletion, indirectly influencing climate?
Troposphere
Stratosphere
Mesosphere
Thermosphere
Explanation - The ozone layer in the stratosphere protects Earth from harmful UV rays, and its depletion can influence atmospheric conditions and climate.
Correct answer is: Stratosphere
Q.12 Which human activity increases methane emissions the most?
Coal mining
Livestock farming
Using air conditioners
Car manufacturing
Explanation - Livestock such as cows produce methane during digestion (enteric fermentation), significantly contributing to greenhouse gas emissions.
Correct answer is: Livestock farming
Q.13 Deforestation contributes to global warming primarily by:
Increasing oxygen
Reducing CO2 absorption
Increasing rainfall
Decreasing soil erosion
Explanation - Trees absorb CO2; cutting them down reduces carbon absorption and releases stored CO2, enhancing global warming.
Correct answer is: Reducing CO2 absorption
Q.14 Which climate phenomenon is amplified by global warming, causing extreme weather events?
El Niño
Aurora Borealis
Lunar Eclipse
Magnetic Storm
Explanation - Global warming can intensify El Niño events, leading to floods, droughts, and other extreme weather conditions worldwide.
Correct answer is: El Niño
Q.15 Which of the following measures can help reduce the carbon footprint?
Using public transport
Eating more meat
Flying frequently
Using single-use plastics
Explanation - Public transport reduces individual car usage, thereby lowering greenhouse gas emissions and carbon footprint.
Correct answer is: Using public transport
Q.16 Which sector is the largest source of global greenhouse gas emissions?
Agriculture
Energy production
Forestry
Construction
Explanation - Burning fossil fuels for electricity and heat is the largest source of CO2 and other greenhouse gases worldwide.
Correct answer is: Energy production
Q.17 What is the greenhouse effect?
Trapping of heat by gases in the atmosphere
Oxygen production by plants
Reflection of sunlight by clouds
Cooling of Earth's surface at night
Explanation - Greenhouse gases trap infrared radiation, keeping the Earth warm. Excessive gases cause global warming.
Correct answer is: Trapping of heat by gases in the atmosphere
Q.18 Which of the following is an impact of melting glaciers?
Increased freshwater supply
Lowered ocean levels
Increased sea levels
Reduced rainfall
Explanation - Melting glaciers add water to oceans, raising sea levels and threatening coastal communities.
Correct answer is: Increased sea levels
Q.19 Which human practice contributes least to climate change?
Burning coal
Driving gasoline cars
Afforestation
Deforestation
Explanation - Planting trees (afforestation) helps absorb CO2, mitigating climate change rather than contributing to it.
Correct answer is: Afforestation
Q.20 Which region experiences the fastest warming due to climate change?
Tropics
Arctic
Equator
Sahara Desert
Explanation - The Arctic warms twice as fast as the global average due to feedback loops like melting ice, which reduces albedo.
Correct answer is: Arctic
Q.21 Which of these is a natural cause of climate change?
Volcanic eruptions
Car emissions
Deforestation
Industrialization
Explanation - Volcanic eruptions release particles and gases that can temporarily influence climate, causing warming or cooling.
Correct answer is: Volcanic eruptions
Q.22 Which type of energy is least harmful to the climate?
Coal
Wind
Oil
Natural Gas
Explanation - Wind energy is renewable and produces electricity without emitting greenhouse gases, making it climate-friendly.
Correct answer is: Wind
Q.23 Which international body monitors climate change and publishes assessment reports?
UNESCO
IPCC
WHO
WTO
Explanation - The Intergovernmental Panel on Climate Change (IPCC) assesses scientific research on climate change and its impacts.
Correct answer is: IPCC
Q.24 Which human lifestyle change can most reduce individual greenhouse gas emissions?
Eating plant-based diets
Buying more cars
Using single-use plastics
Traveling by plane frequently
Explanation - Plant-based diets reduce methane and CO2 emissions associated with livestock farming and meat production.
Correct answer is: Eating plant-based diets
Q.25 Which renewable energy source directly uses sunlight to generate electricity?
Geothermal
Solar
Hydroelectric
Biomass
Explanation - Solar panels convert sunlight directly into electricity, offering a sustainable alternative to fossil fuels.
Correct answer is: Solar