International Green Warrior Olympiad Class 12 Previous Year Papers

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Syllabus:

Clean Water and Sanitation

• Water sources and quality: Sources of clean water (e.g., rivers, lakes, groundwater), water quality testing and monitoring, role of water treatment plants in ensuring safe drinking water
• Sanitation and hygiene: Importance of proper sanitation and hygiene practices, safe disposal of waste and human excreta, role of handwashing in disease prevention
• Waterborne diseases: Common waterborne diseases (e.g., cholera, diarrhoea), how waterborne diseases spread and impact public health, prevention through clean water and sanitation practices
• Water conservation and efficiency: The water cycle and its importance, strategies for water conservation at home and in communities, technologies for efficient water use (e.g., low-flow fixtures)
• Emerging technologies for clean water: Introduction to innovative water purification technologies, solar water purifiers, filtration systems, and water-purifying plants
• Water and the environment: Impact of water pollution on ecosystems and biodiversity, case studies on polluted rivers and oceans, the role of communities in protecting water sources
• Water pollution and treatment: Sources and types of water pollution (e.g., industrial, agricultural), effects of pollution on aquatic ecosystems and human health, wastewater treatment processes and their importance

Affordable and Clean Energy

• Affordable and clean energy: Differentiating between clean and fossil fuel-based energy sources
• Fossil fuels and their consequences: Understanding the environmental impact of fossil fuel use (coal, oil, natural gas), air and water pollution caused by fossil fuels, the role of carbon emissions in climate change
• Alternative energy sources: Solar, wind, hydropower, geothermal, hydro, tidal, wave, biofuel etc., sources of low-carbon energy, advantages of using renewable energy in a domestic setting (solar power, geothermal heat pumps, small wind systems)
• Energy conservation and efficiency: Ways to conserve energy in daily life, benefits of conservation of energy. improving energy efficiency in homes, buildings, and industries can significantly reduce energy consumption. energy-efficient appliances, led lighting, and well-insulated buildings are examples of ways to achieve this.

Sustainable Cities and Communities

• Sustainable water management: Introduction to sustainable water management, rainwater harvesting and greywater recycling, water reuse and recycling practices
• Sustainable waste management: Encourage waste reduction, reuse of materials, and recycling to minimize waste generation
• Environmental sustainability: Preserve green spaces, parks, and natural habitats to support biodiversity
• Effects of urbanisation and sustainable urbanisation

Responsible Consumption and Production

• Responsible technology consumption: The environmental and social consequences of electronics consumption, e-waste management and responsible disposal, strategies for extending the lifespan of electronic devices
• The 5 r's: Reduce, reuse, recycle, repurpose, and refuse
• Reducing energy consumption in daily life, The role of energy-efficient appliances
• Making sustainable purchasing decisions

Climate Action

• Introduction to climate change: Definition of climate change and global warming, evidence of climate change (e.g., temperature records, ice melt, sea-level rise)
• Greenhouse effect and global warming: Understanding the greenhouse effect, role of greenhouse gases (e.g., carbon dioxide, methane), link between human activities and increased greenhouse gas concentrations
• Impacts of climate change: Effects on weather patterns and extreme events, economic and social consequences of climate change, examples of climate change impacts
• Mitigation and adaptation strategies: Reducing greenhouse gas emissions (mitigation), strategies for energy efficiency and renewable energy, climate adaptation measures and resilience building
• Climate change solutions at the individual level: Sustainable lifestyle choices, reducing carbon footprint in daily life

Life Below Water

• Preserving life below water: Reduce marine pollution, protect and restore ecosystems, reduce ocean acidification, practice sustainable fishing, conserve coastal and marine areas etc.
• Sustainable fisheries and aquaculture: Sustainable fishing practices, responsible aquaculture and fish farming, overfishing and bycatch
• Threats to life underwater: Addressing threats like climate change, debris, dead zones, toxic spills, overfishing, shoreline development, coastal erosion, ocean acidification

Life On Land

• Protect, restore, and promote the sustainable use of terrestrial ecosystems: Managing forests sustainably, combating desertification, restoring degraded land and soil, halting biodiversity loss, protecting threatened species
• Forest ecosystems and their importance: Introduction to forest ecosystems (temperate, tropical, boreal), role of forests in carbon storage and climate regulation, deforestation and its impacts

Food Security and Agriculture

• Food choices and sustainable eating: The environmental impact of food choices, sustainable diets and the benefits of local, seasonal foods, reducing food waste and practicing mindful eating
• Food waste reduction: The global problem of food waste, strategies for reducing food waste
• Sustainable agriculture and land use: Sustainable farming practices (e.g., organic, agroecology), role of regenerative agriculture in soil health, urban agriculture and community gardens
• Promoting farming systems that use climate-smart techniques and produce a diverse mix of foods
• Improving supply chains to reduce post-harvest food losses
• Implementing resilient agricultural practices that increase productivity and production

Sample Paper Marking Scheme Free Study Material

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Q.10

Q.1	Coastal regions have been experiencing a rise in sea surface temperatures due to climate change, causing concern among local communities and authorities. As part of a coastal environmental study project, your team is investigating the potential impact of this situation. Based on your research and understanding, which extreme weather event is expected to become more severe or frequent in coastal areas due to climate change ?
	a) Tornadoes		b) Hurricanes/Cyclones
	c) Snowstorms		d) Hailstorms

Q.2	In a university research lab, a team of scientists is conducting an experiment to evaluate the energy efficiency of different types of light bulbs—incandescent, CFL, and LED bulbs. They aim to determine the most environmentally friendly and economical option for widespread use. What type of data should they collect to draw meaningful conclusions? 1. Cost of the bulbs 2. Brightness of the bulbs 3. Energy consumption
	a) Only 1		b) Only 1 and 2
	c) Only 2 and 3		d) 1, 2 and 3

Q.3	A city planner is entrusted with developing a climate adaptation plan for their municipality. The region has experienced increased instances of extreme weather events like intense storms and heatwaves, impacting various aspects of urban life, including infrastructure, public health, and natural resources. What factors should the city planner consider when creating this climate adaptation plan?
	a) Immediate effects of recent weather events on infrastructure.		b) Long-term climate projections and historical weather data to understand changing trends.
	c) Solely focusing on economic aspects to ensure budget efficiency.		d) Disregarding community input as it might complicate the planning process.

Q.4	In a disaster-stricken area where access to clean water is limited, a relief organisation assists a local community facing water contamination. The primary water source, a nearby river, has been contaminated by industrial waste, rendering it unsafe for consumption. Boiling water is one known method for purifying it, but the situation requires alternative solutions due to the sheer volume of contaminated water. What additional effective method can be utilised on a larger scale to purify the contaminated water, making it suitable for drinking purposes in such an emergency?
	a) Adding calcium tablets		b) Activated carbon filtration
	c) Pouring it through a coffee filter		d) Employing a reverse osmosis filtration system

Q.5	A family decides to install solar panels on their roof to generate electricity. How does this contribute to responsible energy consumption?
	a) Increases carbon emissions and environmental impact		b) Reduces reliance on non-renewable energy sources such as fossil fuels
	c) Promotes excessive energy consumption and wastage		d) Encourages dependence on unsustainable energy practices

Q.6	In a rural community, a solar power project is initiated to harness renewable energy. The technicians responsible for installing the solar panels must decide on the optimal angle for maximum energy output. Which scenario is expected to yield the highest energy output?
	a)		b)
	c)		d) All scenarios will yield equal energy output

Q.7	While shopping, Maya sees a new "biodegradable" label on plastic water bottles. Curious, she wonders how accurate this claim is. What should Maya be cautious about regarding the "biodegradable" label on these plastic water bottles? 1. Even if biodegradable, these bottles might not decompose quickly in home compost bins. 2. Biodegradable plastics could harm the environment in different ways if not disposed of properly. 3. This label doesn't necessarily mean the bottles are made from recycled materials.
	a) Only 1		b) Only 1 and 2
	c) Only 2 and 3		d) 1, 2 and 3

Q.8	Match the sustainable food choices and practices with their potential environmental benefits. Choices: 1. Choosing locally grown vegetables and fruits over imported options. 2. Packing reusable dishes and utensils instead of disposable ones. 3. Opting for plant-based meals over meat-based ones for some dinners. 4. Composting leftover food scraps and fruit peels instead of throwing them away. 5. Bringing your own water bottles and avoiding single-use plastic for beverage packaging. Benefits: A. Reducing greenhouse gas emissions and air pollution. B. Conserving soil health and minimising water usage. C. Minimising landfill waste and promoting decomposition. D. Supporting local farmers and reducing transportation emissions. E. Lowering water wastage and preventing plastic pollution.
	a) 1-A, 2-C, 3-B, 4-E, 5-D		b) 1-B, 2-D, 3-E, 4-A, 5-C
	c) 1-D, 2-C, 3-A, 4-B, 5-E		d) 1-E, 2-A, 3-B, 4-C, 5-D

Q.9	Consider the case study given below and answer the following question: Case Study: Threats to Marine Life In the North Atlantic, a large ship accident caused a massive oil spill. This spill polluted the ocean, covering the surface and spreading deep into the water. The oil mixed with floating plastic waste, created dangerous clumps that harmed marine animals and spread toxic chemicals. Furthermore, the surrounding coastal regions experienced heavy industrial runoff from nearby factories and agricultural waste from farms that drain into rivers and streams, carrying excessive nutrients like nitrogen and phosphorus. The combination of oil slicks, entangled plastic debris, and toxic algal blooms severely impacts the local fishing industry, leading to economic downturns and food scarcity in nearby communities reliant on marine resources. The spill also results in long-term ecological damage, affecting critical habitats such as coral reefs, seagrass beds, and estuaries, disrupting entire ecosystems. This situation shows how different kinds of marine pollution, all come together to make things worse for ocean life and the people who depend on it. It is crucial for us to find ways to prevent and clean up these types of pollution to protect our oceans and the creatures living in them. In a region where algal blooms have caused a significant decrease in oxygen levels, which species is most likely to suffer the most adverse effects?
	a) Small fish dependent on oxygen-rich waters.		b) Plankton thriving in low-oxygen environments.
	c) Bottom-dwelling mollusks adapted to varying oxygen levels.		d) Deep-sea corals known for surviving in anoxic conditions.

Q.10	In a coastal region, a team of environmental scientists is conducting research to identify potential carbon sequestration sites. They are particularly interested in ecosystems with waterlogged, anaerobic conditions. Which forest ecosystem in the region is most likely to store large amounts of carbon in its soil?
	a) Coniferous forest		b) Montane forest
	c) Mangrove forest		d) Deciduous forest

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