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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...
  • 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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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 oneb)Only twoc)All threed)NoneCorrect answer is option 'A'. Can you explain this answer?
Question Description
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