Air & Atmosphere - Multiple Choice Questions Quiz

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  • 1/10 Questions

    Which of the following is needed for the combustion of substances?

    • Nitrogen
    • Carbon dioxide
    • Oxygen
    • Noble gases
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About This Quiz

The atmosphere is made up of various gasses, some are harmful where as others are beneficial to us in one-way or another. Having discussed properties of the atmosphere fully you are now capable of answering this quiz. You have 15 minutes to complete 10 MCQs. All the best and keep tabs on what you get wrong.

Air & Atmosphere - Multiple Choice Questions Quiz - Quiz

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  • 2. 

    Carbon monoxide is a pollutant emitted from the car exhaust system. Which of the following reasons explain why carbon monoxide is considered as an air pollutant?

    • It is odourless and colourless

    • It causes lung cancer

    • It forms acid rain which corrodes buildings made of limestone

    • It causes breathing difficulties by preventing the absorption of oxygen

    Correct Answer
    A. It causes breathing difficulties by preventing the absorption of oxygen
    Explanation
    Carbon monoxide is considered an air pollutant because it causes breathing difficulties by preventing the absorption of oxygen. This is because carbon monoxide has a higher affinity for hemoglobin in the blood than oxygen, leading to a decrease in the amount of oxygen that can be transported to the body's tissues. This can result in symptoms such as shortness of breath, dizziness, and even death in severe cases.

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  • 3. 

    Which of the following processes will not affect the carbon cycle?

    • Photosynthesis

    • Respiration

    • Combustion

    • Neutralisation

    Correct Answer
    A. Neutralisation
    Explanation
    Photosynthesis removes carbon dioxide in the atmosphere.
    Both respiration and combustion adds carbon dioxide to the atmosphere.
    Neutralisation does not affect the carbon cycle.

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  • 4. 

    Car exhausts are a major source of pollution by nitrogen oxides. Which statement explains how the oxides are produced?

    • The oxides are produced by the catalytic converter in the exhaust

    • The oxides are produced from the combustion of impurities in the car's fuel

    • Heat from the engine makes atmospheric nitrogen and oxygen react together

    • The oxides are produced due to incomplete combustion of the fuel

    Correct Answer
    A. Heat from the engine makes atmospheric nitrogen and oxygen react together
    Explanation
    The correct answer is "Heat from the engine makes atmospheric nitrogen and oxygen react together." When the engine of a car heats up, it causes the atmospheric nitrogen and oxygen to react and form nitrogen oxides. This reaction occurs due to the high temperatures reached during combustion in the engine.

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  • 5. 

    The burning of fossil fuels releases an air pollutant which attacks limestone and buildings. Which of the following is the air pollutant released?

    • Carbon monoxide

    • Carbon dioxide

    • Oxides of nitrogen

    • Sulfur dioxide

    Correct Answer
    A. Sulfur dioxide
    Explanation
    Both sulfur dioxide and oxides of nitrogen causes acid rain which corrodes buildings.
    However, only sulfur dioxide is produced from the burning of fossil fuels.

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  • 6. 

    Which of the following substances is not found in a clean air sample?

    • Oxygen

    • Nitrogen

    • Hydrogen

    • Helium

    Correct Answer
    A. Hydrogen
    Explanation
    Air is made up of nitrogen, oxygen, carbon dioxide and noble gases.
    Helium is a noble gas. Hydrogen does not belong to any of these categories.

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  • 7. 

    120 cm3 of air is heated with phosphorus to form phosphorus (V) oxide in the air. After the reaction, what is the volume of air which remained?

    • 120

    • 24

    • 96

    • 55

    Correct Answer
    A. 96
    Explanation
    The oxygen has reacted with phosphorus.
    There is 20% of oxygen in the composition of air,
    Amount of oxygen reacted: 20% of 120 = 24
    Remaining volume of air: 120 - 24 = 96

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  • 8. 

    Which gas is not produced when hydrocarbons are burnt in the internal combustion engines? 

    • Carbon dioxide

    • Carbon monoxide

    • Hydrogen

    • Oxides of nitrogen

    Correct Answer
    A. Hydrogen
    Explanation
    Complete combustion produces H2O and CO2.
    Incomplete combustion produces CO.
    Oxides of nitrogen are produced around the engines at high temperatures. N2 + 2O2 + heat --> 2NO2
    Hydrogen is not produced.

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  • 9. 

    Unpolluted rain water has a pH of about 6. Which of the following gas causes this pH?

    • Carbon dioxide

    • Oxygen

    • Nitrogen dioxide

    • Sulfur dioxide

    Correct Answer
    A. Carbon dioxide
    Explanation
    pH 6 is slightly acidic.
    Carbon dioxide dissolves in water to form carbonic acid, which is slightly acidic.
    CO2 + H2O --> H2CO3
    Nitrogen dioxide dissolves to form nitric acid while sulfur dioxide dissolves to form sulfuric acid, with a pH of about 3.

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  • 10. 

    A tyre of a lorry is made by heating together a mixture of sulfur and rubber. Rubber is a hydrocarbon. What are the products if the tyre is completely burnt in air?  

    • Carbon monoxide, carbon dioxide, sulfur dioxide, water

    • Carbon dioxide, sulfur dioxide

    • Carbon dioxide, sulfur dioxide, water

    • Carbon dioxide, carbon monoxide, water

    Correct Answer
    A. Carbon dioxide, sulfur dioxide, water
    Explanation
    Sulfur reacts with oxygen to form sulfur dioxide.
    S (g) + O2 (g) --> 2SO2 (g)
    Hydrocarbon burns completely to form carbon dioxide and water.

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  • Current Version
  • Aug 16, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Jul 10, 2011
    Quiz Created by
    Cherylfong
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