The Chemical Industry (Grade 12 NSC Matric Physical Sciences): Quizzes
📚Quizzes
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Practise the questions
10 questions from this quiz
What is eutrophication?
What is eutrophication?
Water systems over-enriched with nutrients
Which two nutrients are particularly responsible for eutrophication?
Which two nutrients are particularly responsible for eutrophication?
Nitrogen and phosphorus
What are the two main human causes of eutrophication?
What are the two main human causes of eutrophication?
Agricultural runoff and sewage discharge
How long does natural eutrophication typically take compared to human-accelerated eutrophication?
How long does natural eutrophication typically take compared to human-accelerated eutrophication?
Thousands of years vs decades or years
How does excessive plant growth affect deeper water areas during eutrophication?
How does excessive plant growth affect deeper water areas during eutrophication?
Blocks sunlight from reaching deeper areas
Why do oxygen levels decrease in eutrophic waters?
Why do oxygen levels decrease in eutrophic waters?
Plants consume oxygen during respiration
What is the main function of buffer zones in preventing eutrophication?
What is the main function of buffer zones in preventing eutrophication?
Trap nutrients and sediments as filters
What benefit does nitrogen testing and soil modelling provide to farmers?
What benefit does nitrogen testing and soil modelling provide to farmers?
Apply only required fertiliser amounts
Which of these are macronutrients needed in large quantities?
Which of these are macronutrients needed in large quantities?
Carbon, nitrogen, phosphorus, potassium
Which industrial process produces ammonia for fertilisers?
Which industrial process produces ammonia for fertilisers?
Haber process