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Question

Which of the following pollutants is most closely associated with the formation of acid rain?

The correct answer is
Sulphur dioxide

Acid Rain Formation: Key Pollutant

Acid rain is caused by atmospheric pollutants that react with water and oxygen. These reactions form acidic compounds, primarily sulfuric acid and nitric acid, which then fall to the earth.

Pollutant Analysis

Examining the options provided:

  • Ammonia: Mainly contributes to particulate matter and can act as a neutralizing agent, not a primary cause of acid rain.
  • Methane: Primarily known as a greenhouse gas and is not directly involved in acid rain formation.
  • Ozone: While involved in atmospheric chemistry and smog, it's not the main precursor pollutant for acid rain.
  • Sulphur dioxide (SO2): This gas, often released from burning fossil fuels (like coal and oil), is a major precursor. In the atmosphere, SO2 reacts with water and oxygen to form sulfuric acid (H2SO4), a key component of acid rain. The process involves oxidation and hydration reactions.

Conclusion on Acid Rain Pollutant

Based on the chemical processes involved in atmospheric pollution, Sulphur dioxide is the pollutant most significantly associated with the formation of acid rain.

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Important Questions from Environmental pollution

  1. Photochemical smog is a resultant of the reaction among

  2. Which of the following is NOT responsible for the degradation of our environment?

  3. Why is there a concern about copper smelting plants?

    1. They may release lethal quantities of carbon monoxide into environment. 

    2. The copper slag can cause the leaching of some heavy metals into the environment.

    3. They may release sulphur dioxide as a pollutant.

    Select the correct answer using the code given below.

  4. Magnetite particles, suspected to cause neurodegenerative problems are generated as environmental pollutants from which of the following?

    1. Brakes of motor vehicles

    2. Engines of motor vehicles

    3. Microwave ‘Stoves within homes

    4. Power plants

    5. Telephone lines

    Select the correct answer using the code given below.

  5. Considering the primary atmospheric roles and radiative forcing characteristics, which of the following gases is not typically categorized as a long-lived, well-mixed greenhouse gas contributing directly to the Earth's warming, but rather is known for its role in atmospheric aerosol formation and acid deposition?

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