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Consider the following statements:
1. The good ozone is present in the troposphere of the earth's atmosphere.
2. The good ozone protects human beings from harmful Ultraviolet (UV) radiation.
3. The ground-level ozone is produced when nitrogen oxides (NOx) and volatile organic compounds (VOCs) react in sunlight and stagnant air.
Which of the statements given above is/are correct?
  • a)
    1 only
  • b)
    1 and 2 only
  • c)
    2 and 3 only
  • d)
    1, 2 and 3
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Consider the following statements:1. The good ozone is present in the ...
  • Ozone (composed of three atoms of oxygen) is a gas that occurs both in the Earth’s upper atmosphere and at ground level. Ozone can be “good” or “bad” for health and the environment, depending on its location in the atmosphere.
  • The ‘good’ ozone present in the earth’s stratosphere layer protects human beings from harmful Ultraviolet (UV) radiation whereas the ground level ozone is highly reactive and can have adverse impacts on human health. Hence, statement 1 is not correct but statement 2 is correct.
    • Ground level ozone is dangerous for those suffering from respiratory conditions and asthma.
  • Ground-level ozone is a colorless and highly irritating gas that forms just above the earth's surface.
    • It is called a "secondary" pollutant because it is produced when two primary pollutants react in sunlight and stagnant air.
      • These two primary pollutants are nitrogen oxides (NOx) and volatile organic compounds (VOCs). Hence, statement 3 is correct.
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Consider the following statements:1. The good ozone is present in the troposphere of the earths atmosphere.2. The good ozone protects human beings from harmful Ultraviolet (UV) radiation.3. The ground-level ozone is produced when nitrogen oxides (NOx) and volatile organic compounds (VOCs) react in sunlight and stagnant air.Which of the statements given above is/are correct?a)1 onlyb)1 and 2 onlyc)2 and 3 onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer?
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