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All questions of Waste Management-I for Class 10 Exam

What is the main advantage of using renewable energy, according to environmental initiatives?
  • a)
    Decreases energy efficiency
  • b)
    Reduces air pollution
  • c)
    Increases reliance on fossil fuels
  • d)
    Increases waste production
Correct answer is option 'B'. Can you explain this answer?

Sasha sharma answered
Understanding the Advantage of Renewable Energy
Renewable energy sources, such as solar, wind, and hydropower, offer significant environmental benefits. One of the most notable advantages is their ability to reduce air pollution.
Reduction of Air Pollution
- Cleaner Energy Production: Renewable energy systems generate power without burning fossil fuels, which are the primary sources of air pollutants. This leads to fewer emissions of harmful substances like sulfur dioxide, carbon monoxide, and particulate matter.
- Health Benefits: By decreasing air pollution, renewable energy contributes to improved public health. Cleaner air reduces the incidence of respiratory diseases, cardiovascular problems, and other health issues linked to pollution.
- Mitigation of Climate Change: Reducing air pollution also plays a crucial role in combating climate change. Fossil fuel combustion releases significant amounts of greenhouse gases, which trap heat in the atmosphere. Transitioning to renewables helps lower these emissions, thereby addressing global warming.
Additional Environmental Benefits
- Sustainable Resources: Renewable energy sources are abundant and replenishable, ensuring a constant energy supply without depleting natural resources.
- Biodiversity Preservation: By reducing reliance on fossil fuels, renewable energy helps protect ecosystems and wildlife habitats from the destructive effects of mining and drilling.
Conclusion
In summary, the primary advantage of renewable energy, as highlighted by environmental initiatives, is its capability to significantly reduce air pollution. This not only benefits the environment but also enhances public health and contributes to the fight against climate change, making it a crucial element in sustainable development.

What does the process of composting transform waste into?
  • a)
    Plastic
  • b)
    Fertilizer
  • c)
    Humus
  • d)
    Biogas
Correct answer is option 'C'. Can you explain this answer?

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Composting converts organic waste into humus, which enhances soil fertility. This sustainable practice helps reduce waste and improve agricultural productivity.

Which of the following is a consequence of heavy metal poisoning in humans?
  • a)
    Behavioral disorders
  • b)
    Increased energy levels
  • c)
    Improved immune response
  • d)
    Enhanced cognitive function
Correct answer is option 'A'. Can you explain this answer?

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Heavy metal poisoning can lead to serious health issues, including behavioral disorders, which can significantly impair an individual's quality of life and ability to function normally.

Which method of waste disposal is considered the safest and most environmentally friendly?
  • a)
    Landfilling
  • b)
    Burning
  • c)
    Sanitary landfills
  • d)
    Open dumping
Correct answer is option 'C'. Can you explain this answer?

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Sanitary landfills are designed to minimize environmental impact by properly containing waste and allowing for controlled decomposition, making them the safest option for waste disposal compared to other methods.

What is the term for the process that leads to a decrease in oxygen levels in water bodies?
  • a)
    Bioaccumulation
  • b)
    Eutrophication
  • c)
    Sedimentation
  • d)
    Biomagnification
Correct answer is option 'B'. Can you explain this answer?

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Eutrophication occurs when excess nutrients and chemicals lead to rapid growth of phytoplankton and algae, which block oxygen penetration in the water, ultimately harming aquatic life.

What method is used to remove water-soluble gases from emissions?
  • a)
    Filtration
  • b)
    Scrubbing
  • c)
    Incineration
  • d)
    Composting
Correct answer is option 'B'. Can you explain this answer?

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Scrubbing is a method that captures water-soluble gases, such as sulfur dioxide, by passing polluted gases through water, effectively reducing air pollution.

What is the function of an electrostatic precipitator?
  • a)
    To compost organic waste
  • b)
    To capture particulate matter from gases
  • c)
    To filter water
  • d)
    To segregate waste
Correct answer is option 'B'. Can you explain this answer?

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An electrostatic precipitator is designed to remove particulate matter, such as fly ash, from emissions by using electric charges to attract and collect the pollutants, proving essential for air quality control.

Which of the following is a chronic disease associated with long-term exposure to polluted air?
  • a)
    Asthma
  • b)
    Lung cancer
  • c)
    Diabetes
  • d)
    Heartburn
Correct answer is option 'B'. Can you explain this answer?

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Long-term exposure to polluted air can result in chronic diseases, including lung cancer. This underscores the critical need for air quality management to protect public health.

Which waste disposal method involves separating waste into biodegradable and non-biodegradable categories?
  • a)
    Incineration
  • b)
    Landfilling
  • c)
    Segregation
  • d)
    Open dumping
Correct answer is option 'C'. Can you explain this answer?

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Segregation is the process of categorizing waste into biodegradable and non-biodegradable types, which is essential for efficient waste management and recycling efforts.

What is the primary purpose of incineration in waste management?
  • a)
    To produce compost
  • b)
    To recycle materials
  • c)
    To segregate waste
  • d)
    To reduce waste volume
Correct answer is option 'D'. Can you explain this answer?

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Incineration primarily aims to reduce the volume of waste by burning it at high temperatures, which also helps kill pathogenic organisms, although it can produce air pollutants.

Which of the following is a method of reducing waste at the source?
  • a)
    Landfilling
  • b)
    Recycling
  • c)
    Reusing materials
  • d)
    Efficient production processes
Correct answer is option 'D'. Can you explain this answer?

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Minimizing waste generation through more efficient production processes is a critical method for reducing waste at the source, helping to lessen the overall environmental impact and promoting sustainability.

What is a major consequence of open dumping of waste?
  • a)
    Breeds pests like mosquitoes
  • b)
    Improves air quality
  • c)
    Enhances local biodiversity
  • d)
    Increases land value
Correct answer is option 'A'. Can you explain this answer?

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Open dumping creates breeding grounds for pests such as mosquitoes and flies, which can lead to the spread of diseases, indicating the need for proper waste management practices.

What health issue can arise from air pollution due to waste accumulation?
  • a)
    Respiratory infections
  • b)
    Dental problems
  • c)
    Bone fractures
  • d)
    Skin rashes
Correct answer is option 'A'. Can you explain this answer?

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Air pollution can lead to respiratory infections and irritation of the eyes, nose, and throat. Long-term exposure can cause chronic respiratory diseases, emphasizing the importance of clean air for public health.

What can be a result of nitrogen dioxide exposure for plants?
  • a)
    Enhanced fruit yield
  • b)
    Increased chlorophyll production
  • c)
    Improved soil quality
  • d)
    Premature leaf drop
Correct answer is option 'D'. Can you explain this answer?

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Nitrogen dioxide exposure can lead to premature leaf drop in plants, negatively affecting their growth and productivity, thereby impacting agricultural yields.

What is a common result of the accumulation of waste in open areas?
  • a)
    Habitat for disease-carrying organisms
  • b)
    Enhanced soil quality
  • c)
    Increased biodiversity
  • d)
    Improved aesthetics
Correct answer is option 'A'. Can you explain this answer?

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Accumulated waste can create habitats for disease-carrying organisms, such as rats and mosquitoes, which poses significant public health risks and underscores the need for proper waste management.

What harmful effect does acid rain have on monuments?
  • a)
    Enhances their beauty
  • b)
    Increases their height
  • c)
    Changes their color to green
  • d)
    Causes corrosion
Correct answer is option 'D'. Can you explain this answer?

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Acid rain reacts with the materials of historical monuments, causing corrosion. Notable examples include the Parthenon, which has suffered deterioration due to acid rain, highlighting the impact of pollution on cultural heritage.

What is the role of chlorine gas in tertiary treatment of wastewater?
  • a)
    To remove large particles
  • b)
    To oxidize organic matter
  • c)
    To kill harmful organisms
  • d)
    To filter sediment
Correct answer is option 'C'. Can you explain this answer?

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Chlorine gas is used in the tertiary treatment stage to disinfect and kill any remaining harmful microorganisms in the treated wastewater, ensuring it is safe for reuse.

What is one of the health risks associated with exposure to radioactive materials?
  • a)
    Genetic mutations
  • b)
    Stomach ulcers
  • c)
    Skin burns
  • d)
    High blood pressure
Correct answer is option 'A'. Can you explain this answer?

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Exposure to radioactive materials can lead to genetic mutations, which can affect future generations. This highlights the importance of strict regulations on radioactive waste disposal.

What can happen to aquatic life as a result of eutrophication?
  • a)
    Enhanced growth of fish
  • b)
    Improved water clarity
  • c)
    Death of fish due to oxygen depletion
  • d)
    Increased oxygen levels
Correct answer is option 'C'. Can you explain this answer?

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Eutrophication leads to excessive growth of algae that depletes oxygen levels in water, creating a harmful environment for fish and other aquatic organisms, which can result in their death.

What is biomagnification?
  • a)
    Decrease in fish population
  • b)
    Reduction of waste in landfills
  • c)
    Accumulation of nutrients in soil
  • d)
    Increase in toxic substance concentration at higher trophic levels
Correct answer is option 'D'. Can you explain this answer?

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Biomagnification refers to the process where harmful substances accumulate in higher concentrations at each trophic level of the food chain, affecting predators most severely.

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