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Punjab (PTB) · Chapter test · Free

1st Year Chemistry Chapter 14 TestAtmosphere

30 marks · 40 minutes · 21 questions. Covers: CHAP 14: Atmosphere.

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1st Year Chemistry Chapter 14 Test

1st Year · Chemistry · Punjab (PTB)

Name: ____________Roll No: ________Class/Section: ________Date: ________Total marks: 30Time: 40 minutes

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

  1. The mobile source of air pollution is:

    1. Cement factory

    2. Power plant

    3. Airplane

    4. Oil refinery

  2. Which atmospheric layer would a commercial airplane typically fly in to avoid weather turbulence?

    1. Troposphere

    2. Stratosphere

    3. Mesosphere

    4. Thermospher

  3. CFCs are harmful to the environment because of:

    1. They cause acid rain

    2. They deplete the ozone layer in the stratosphere

    3. They increase air temperature directly

    4. They cause water pollution

  4. Which international agreement aims to reduce CFC emissions globally?

    1. Kyoto Protocol

    2. Montreal Protocol

    3. Paris Agreemen

    4. Basel Convention

  5. The lowest layer of the atmosphere is:

    1. Mesosphere

    2. Stratosphere

    3. Thermosphere

    4. Troposphere

  6. PAHs primarily enter the human body by inhalation of polluted air and:

    1. Through skin contact with water

    2. consumption of contaminated food

    3. Exposure to sunlight

    4. Drinking clean water

  7. The Kyoto Protocol focuses mainly on reducing:

    1. Sulfur oxides

    2. Particulate matter

    3. Greenhouse gases

    4. Lead compounds

  8. A major source of indoor air pollution in rural areas is:

    1. Refrigerators

    2. Fans

    3. Use of biomass fuels for cooking

    4. LED lighting

  9. Planting more trees helps reduce air pollution by:

    1. Producing nitrogen dioxide

    2. Releasing carbon monoxide

    3. Absorbing carbon dioxide

    4. Increasing ozone in the air

  10. Chlorofluorocarbons (CFCs) have been primarily used in:

    1. Fertilizers

    2. Refrigerants and aerosol propellants

    3. Pharmaceuticals

    4. Pesticides

Q2. Short questions (Attempt any 6 of 8 · 6 × 2 = 12)

  1. What are hydrocarbons and how do they enter the atmosphere?

  2. Why is carbon monoxide dangerous? And How is carbon dioxide a threat to the environment?

  3. What is the importance of using public transportation in reducing air pollution?

  4. What are the environmental impacts of persistent organic pollutants (POPs)?

  5. What is a nephelometer and what does it measure?

  6. How does burning fossil fuels affect the atmosphere?

  7. What are oxides of sulphur and how are they formed?

  8. How does the thermosphere protect Earth from solar radiation?

Q3. Long questions (Attempt any 2 of 3 · 2 × 4 = 8)

  1. Discuss the impact of human actions on atmosphere. Explain how the burning of fossil fuels and deforestation contribute to atmosphere pollution.

  2. How various oxides that act as air pollutants. Explain their sources, chemical reactions and environmental impacts.

  3. Discuss sources and effects of following air pollutants on environment: (i) Heavy metals (ii) VOCs (iii) PAHs (iv) POPs