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Environmental Chemistry Test - 24

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Environmental Chemistry Test - 24
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  • Question 1
    1 / -0
    What is the main cause of acid rain?
  • Question 2
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    Which of the following gases can result in the formation of acid rain?
    Solution
    The main chemicals in air pollution that create acid rain are sulfur dioxide$$(SO_2)$$ and nitrogen oxides. Acid rain usually forms high in the clouds where sulfur dioxide and nitrogen oxides react with water, oxygen, and oxidants. this mixture forms a mild solution of sulfuric acid and nitric acid.
    So the answer is C.
  • Question 3
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    Acid rain is produced when rain mixes with gases such as sulphur dioxide. This will eventually result in
    Solution
    The ecological effects of acid rain are most clearly seen in the aquatic environments, such as streams, lakes, etc. Acid rain flows into streams, lakes and marshes after falling on forests, fields, building and roads. Acid rain water primarily decreases the pH of water sources from normal range (6 to 8 pH) Lakes and streams become acidic (i.e., pH values goes down), when water itself and its surrounding soil cannot buffer the acid rain water to neutralize it. In areas where buffering capacity is low, acid rain releases aluminium from soils into lakes and streams, aluminium is highly toxic to many species of aquatic organisms leading to their mortality. Therefore, limiting the survival of aquatic animals. So, the correct answer is 'Lowering of pH in ponds, limiting survival of aquatic organisms'.
  • Question 4
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    The marble contains __________ which reacts with acids present in acid rain.
  • Question 5
    1 / -0
    What are the two main chemicals in acid rain?
    Solution

  • Question 6
    1 / -0
    Materials that can be recycled include:
    1) old newspapers
    2) aluminum tin cans
    3) plastic pails
    Solution
    Recycling is the process of converting waste materials into reusable objects to prevent waste of usable products.Old newspapers,aluminium cans and plastics can be reused from waste to useful material.
  • Question 7
    1 / -0
    Which of the following does not affect ozone layer ?
    Solution

  • Question 8
    1 / -0
    Chlorofluorocarbons deplete _______ layer.
  • Question 9
    1 / -0
    Smog is a combination of :
    Solution
    Smog is a type of air pollutant, is a combination of smoke and fog. Classic smog results from large amounts of coal burning in an area and its caused by a mixture of smoke and sulphur dioxide.
  • Question 10
    1 / -0
    Acid rain is the downpour of  
    Solution
    Acid rain is caused by a chemical reaction that begins when compounds like sulphur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

    Hence, option C is correct.
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