International Green Warrior Olympiad Class 10 Sample Paper

Q.1

An environmental organisation has embarked on a project aimed at restoring a degraded river ecosystem. The project involves reintroducing native fish species that have declined due to habitat degradation and water quality issues. Additionally, efforts are being made to improve overall water quality by implementing measures to reduce pollution and restore natural habitat.
What could be an anticipated outcome of this restoration effort in the degraded river ecosystem?

Q.2

You typically wash a full load of laundry with hot water (40°C). Based on the provided information, which of the following options would have the potential to reduce your total laundry energy consumption?

A. Washing smaller loads more frequently instead of a full load once a week.
B. Switching to warm water (30°C) for most washes.
C. Air-drying your clothes instead of using the dryer entirely.
D. Cleaning the lint screen in your dryer after every load to improve airflow.

Q.3

Consider the case study given below and answer the following question:

Case Study: The Müller Family's Journey to Renewable Energy

The Müller family, residing in a charming village in the German countryside, had always been conscious about their environmental impact. In 2022, they decided to take an active step towards a greener lifestyle by installing a rooftop solar panel system. Their primary motivation was to reduce their reliance on fossil fuels and contribute to mitigating climate change. However, as they embarked on this journey, they discovered a plethora of other benefits:

Environmental Benefits:
-Reduced Carbon Footprint: The solar panels generated clean energy, leading to a significant reduction in their carbon emissions. This translated to a cleaner environment for their family, their community, and the planet.
-Improved Air Quality: By relying less on fossil fuels, the Müllers contributed to cleaner air in their region, which improved their overall health and well-being.

Financial Benefits:
-Reduced Electricity Bills: The solar panels generate enough electricity to cover a significant portion of their household energy needs, resulting in substantial savings on their monthly electricity bills. This provided them with financial stability and freed up resources for other expenses.
-Government Incentives: The German government offers various financial incentives for individuals and families adopting renewable energy solutions. The Müllers took advantage of these incentives, further reducing the cost of their solar panel system and accelerating their return on investment.

Lifestyle Benefits:
-Energy Independence: The Müllers achieved a sense of energy independence by generating their own clean energy. This gave them greater control over their energy consumption and reduced their dependence on the national grid, especially during peak hours.
-Enhanced Home Value: Homes with renewable energy systems are becoming increasingly sought-after, leading to a potential increase in the value of the Müller's property.

Overall Impact:
The Müller family's experience showcases the numerous benefits of adopting renewable energy in a domestic setting. Their commitment to environmental sustainability not only helped them create a cleaner future but also resulted in financial savings and enhanced their quality of life. Their story serves as an inspiration for others to consider switching to renewable energy and contribute to a more sustainable future.

Which of the following statements best describes the primary motivation of the Müller family to switch to renewable energy?

1. Environmental sustainability
2. Financial savings
3. Increased energy independence
4. Minimising the environmental impact

Q.4

Your town currently relies on chlorine for water disinfection, but concerns about its byproducts have prompted the exploration of alternative methods. Using ozone treatment during wastewater treatment (shown in the picture below) has emerged as a promising option.

Which of the following is the main advantage of ozone in water purification?

Q.5

In a community relying on private well water, residents suspect mercury contamination due to industrial activities in the vicinity. They conduct water tests, and the results show varying mercury concentrations across different households. Analyse the provided table showcasing mercury levels in parts per billion (ppb) from five different wells.

Based on the data, which conclusion is most likely accurate regarding the mercury contamination in the private wells?

Q.6

John is considering installing a heating and cooling system in his new home. He wants an energy-efficient and environmentally friendly option. After researching various systems, he learned about geothermal heat pumps. Which of the following statements is true about geothermal heat pumps?

1. Geothermal heat pumps use the Earth's constant temperature to heat and cool homes.
2. Geothermal heat pumps maintain consistent efficiency in all weather conditions.
3. Geothermal heat pumps have a longer lifespan than traditional systems.

Q.7

In a region prone to erratic weather patterns, farmers face the recurring challenge of water scarcity. A group of agricultural researchers suggests adopting sustainable practices to mitigate the effects of drought. What would be the most effective way to implement this solution?

Q.8

A community relies on a rainwater harvesting system for its water supply. The system collects rainwater from rooftops and stores it in large underground tanks. After a heavy rainfall, the residents notice that the stored water has a brownish colour and an unpleasant odour.

What could be the most likely cause of this contamination?

1. Insufficient filtration and disinfection of the rainwater
2. Accumulation of organic debris in the storage tanks
3. Leaching of pollutants from roofing materials

Q.9

You are watching a wildlife documentary where a pod of migrating humpback whales suddenly changed their course, avoiding a polluted area in the river. It was later shown that the scientists discovered high levels of mercury in the water.
How could this pollution potentially threaten the whales?

1. Weaken their immune system
2. Damage their nervous system, impacting movement
3. Blur their vision, hindering navigation and hunting

Q.10

You're in the market to purchase a new refrigerator for your home. While browsing, you notice an Energy Star label on a refrigerator that displays a rating of 3. Intrigued by this energy efficiency indicator, you decide to understand what this rating signifies.

What does an Energy Star rating of 3 on a refrigerator indicate?