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Consider the following statements about Ozone:
1. It can only be formed naturally in the atmosphere.
2. In the stratosphere, it forms a shield protecting us from the UV radiation of the sun.
3. Ozone is not found in the troposphere.
How many of the above statements are correct?
  • a)
    Only one
  • b)
    Only two
  • c)
    All three
  • d)
    None
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Consider the following statements about Ozone:1. It can only be formed...
Understanding Ozone: An Overview
Ozone (O3) is a molecule composed of three oxygen atoms and plays a crucial role in the Earth's atmosphere. Let's analyze the statements provided:
1. Ozone Formation
- Ozone can be formed both naturally and artificially.
- Natural formation occurs primarily through photochemical reactions involving sunlight and oxygen.
- Therefore, this statement is incorrect.
2. Ozone in the Stratosphere
- Ozone is concentrated in the stratosphere, forming the ozone layer.
- This layer acts as a protective shield, absorbing the majority of the sun's harmful ultraviolet (UV) radiation.
- Thus, this statement is correct.
3. Ozone in the Troposphere
- Ozone is indeed found in the troposphere, but not in significant concentrations like in the stratosphere.
- It is often a pollutant formed by chemical reactions between volatile organic compounds (VOCs) and nitrogen oxides in the presence of sunlight.
- Therefore, this statement is incorrect.
Conclusion
- Based on the analysis, only the second statement about ozone in the stratosphere is correct.
- Therefore, the correct answer is option 'A': Only one statement is correct.
Understanding ozone's role is vital for appreciating atmospheric science and environmental health.
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Community Answer
Consider the following statements about Ozone:1. It can only be formed...
  • Ozone is a gas composed of three atoms of oxygen. It occurs both in the Earth’s upper atmosphere and at ground level. Depending on its location in the atmosphere, it can be good or bad.
  • Stratospheric ozone is formed naturally through the interaction of solar ultraviolet (UV) radiation with molecular oxygen (O2). Here, it forms the "ozone layer," which is approximately 6-30 miles above the Earth's surface. This layer shields us from the harmful UV radiation emanating from the sun. Hence, statement 2 is correct.
  • In the troposphere, ozone is formed when heat and sunlight cause chemical reactions between oxides of nitrogen (NOX) and Volatile Organic Compounds (VOC), which are also known as Hydrocarbons. This reaction can occur both near the ground and high in the atmosphere. This ground Ozone is the “bad” ozone and is a secondary air pollutant. It damages crops, trees, and other vegetation and caused severe health problems. Hence statement 3 is not correct.
  • In both these processes, Ozone is formed naturally. However, it can also be artificially produced, so that it can be used for water treatment. Ozone generators can create ozone artificially by means of extremely high voltages or by means of UV light. Both methods involve the decomposition of the oxygen molecule. Hence statement 1 is not correct.
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