Waste Management and Recycling
Chemistry ⇒ Environmental Chemistry
Waste Management and Recycling starts at 11 and continues till grade 12.
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See sample questions for grade 12
A landfill receives 5000 kg of organic waste daily. If 60% of this waste is converted to methane, how much methane is produced per day? (Molar mass of methane = 16 g/mol)
Describe one chemical method for the detoxification of cyanide-containing industrial waste.
Describe the chemical hazards associated with improper disposal of fluorescent lamps.
Describe the environmental impact of improper disposal of batteries.
Describe the environmental risks of open dumping of waste.
Describe the main chemical reactions involved in the incineration of municipal solid waste.
Explain the difference between hazardous and non-hazardous waste, giving one example of each.
Explain the importance of pH adjustment in the treatment of industrial wastewater.
Explain the role of chemical precipitation in wastewater treatment.
Explain why glass is considered an ideal material for recycling.
Explain why plastics are a major concern in waste management from a chemical perspective.
Name one chemical process used to treat hazardous waste before disposal.
State one environmental disadvantage of landfilling as a waste management method.
Which gas is commonly produced in large quantities during the anaerobic decomposition of organic waste in landfills?
