Waste Management and Recycling
Chemistry ⇒ Environmental Chemistry
Waste Management and Recycling starts at 11 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Waste Management and Recycling.
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See sample questions for grade 11
Describe one chemical process that occurs during the incineration of municipal solid waste.
Describe one way in which improper waste management can affect human health.
Describe the chemical risks associated with the improper disposal of batteries.
Describe the environmental benefits of using recycled paper instead of virgin paper.
Describe the process of leachate formation in landfills and its environmental impact.
Explain the difference between biodegradable and non-biodegradable waste.
Explain the environmental impact of open dumping of waste.
Context: A city is considering two waste management strategies: (A) increasing landfill capacity, and (B) investing in advanced recycling technologies that use chemical processes to break down plastics into monomers for reuse.
Question: Discuss the long-term environmental and chemical advantages of strategy B over strategy A.
Which gas is commonly produced in landfills due to anaerobic decomposition of organic waste? (1) Oxygen (2) Methane (3) Carbon monoxide (4) Nitrogen
Which of the following is a benefit of composting organic waste? (1) Increases landfill space (2) Produces nutrient-rich soil (3) Releases toxic gases (4) Increases water pollution
Which of the following is a chemical hazard associated with incineration of waste? (1) Dioxin formation (2) Methane production (3) Leachate generation (4) Ozone depletion
Which of the following is a chemical process that occurs during the decomposition of organic waste in composting? (1) Hydrolysis (2) Polymerization (3) Electrolysis (4) Sublimation
Fill in the blank: The 3Rs of waste management are Reduce, Reuse, and __________.
Fill in the blank: The chemical formula for methane, a landfill gas, is __________.
Fill in the blank: The main greenhouse gas produced by anaerobic decomposition of waste in landfills is __________.
Fill in the blank: The process of breaking down organic matter in the absence of oxygen is called __________ digestion.
State whether the following statement is true or false: E-waste contains hazardous substances that can harm the environment.
True or False: All metals can be recycled indefinitely without loss of quality.
True or False: All types of paper are suitable for recycling.
True or False: Composting can help reduce the amount of waste sent to landfills.
