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JEE Exam  >  JEE Questions  >  Which of the following statements is wrong?a)... Start Learning for Free
Which of the following statements is wrong?
  • a)
    Ozone is not responsible for the greenhouse effect.
  • b)
    Ozone can oxidize sulphur dioxide present in the atmosphere to sulphur trioxide.
  • c)
    Ozone hole is the thinning of ozone layer present in the stratosphere.
  • d)
    Ozone is produced in the upper stratosphere by the action of UV rays on oxygen.
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Which of the following statements is wrong?a)Ozone is not responsible ...
  • The greenhouse effect arises due to the presence of gases like freons, methane, carbon dioxide, ozone and water vapours in the atmosphere.
  • These gases can trap the heat of the sun, hence, increase the temperature of the atmosphere.
  • And also, maintains the average temperature of the earth.
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Most Upvoted Answer
Which of the following statements is wrong?a)Ozone is not responsible ...
Explanation:

Greenhouse Effect
- Ozone is responsible for the greenhouse effect. It traps heat in the Earth's atmosphere, preventing it from escaping back into space.

Oxidation of Sulphur Dioxide
- Ozone can indeed oxidize sulphur dioxide present in the atmosphere to form sulphur trioxide. This process helps in reducing air pollution.

Ozone Hole
- The ozone hole refers to the thinning of the ozone layer in the stratosphere, particularly over Antarctica. This thinning is a result of human activities such as the release of chlorofluorocarbons (CFCs) into the atmosphere.

Production of Ozone
- Ozone is produced in the upper stratosphere by the action of UV rays on oxygen molecules. This process leads to the formation of the ozone layer, which plays a crucial role in protecting life on Earth from harmful UV radiation.
Therefore, the statement that "Ozone is not responsible for the greenhouse effect" is incorrect. Ozone is indeed a greenhouse gas and contributes to the warming of the Earth's atmosphere.
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The atmospheric lapse rateFor small volumes of gas, according to kinetic theory of gases, all parts of the gas are at the same temperature. But for huge volumes of gas like atmosphere, assumption of a uniform temperature throughout the gas is not valid. Different parts of the atmosphere are at different temperatures. Apart from the surface of the earth, variations also occur in temperature at different heights in the atmosphere.The decrease in temperature with height called the atmospheric lapse rate is similar at various locations across the surface of the Earth. By analyzing the data collected at various locations, it is found that average global lapse rate is – 6.7 °C/Km.The linear decrease with temperature only occurs in the lower part of the atmosphere called the troposphere. This is the part of the atmosphere in which weather occurs and our planes fly. Above the troposphere is the stratosphere, with an imaginary boundary separating the two layers. In the stratosphere, temperature tends to be relatively constant.Absorption of sunlight at the Earth’s surface warms the troposphere from below, so vertical convection currents are continually mixing in the air. As a parcel of air rises, its pressure drops and it expands. The parcel does work on its surrounding, so that its internal energy and therefore, its temperature drops. Assume that the vertical mixing is so rapid as to be adiabatic and the quantityTP(1 – λ)/λ has a uniform value through the layers of troposphere.(M is molecular mass of the air, R is universal gas constant, g is gravitational acc., P and T are pressure and temperature respectively at the point under consideration and y is height.)Q. The value of theoretical lapse rate on the earth is (use g = 9.8 m/s2 ; R = 8.3 J/mol-k and M = 29 g/mol)

The atmospheric lapse rateFor small volumes of gas, according to kinetic theory of gases, all parts of the gas are at the same temperature. But for huge volumes of gas like atmosphere, assumption of a uniform temperature throughout the gas is not valid. Different parts of the atmosphere are at different temperatures. Apart from the surface of the earth, variations also occur in temperature at different heights in the atmosphere.The decrease in temperature with height called the atmospheric lapse rate is similar at various locations across the surface of the Earth. By analyzing the data collected at various locations, it is found that average global lapse rate is – 6.7 °C/Km.The linear decrease with temperature only occurs in the lower part of the atmosphere called the troposphere. This is the part of the atmosphere in which weather occurs and our planes fly. Above the troposphere is the stratosphere, with an imaginary boundary separating the two layers. In the stratosphere, temperature tends to be relatively constant.Absorption of sunlight at the Earth’s surface warms the troposphere from below, so vertical convection currents are continually mixing in the air. As a parcel of air rises, its pressure drops and it expands. The parcel does work on its surrounding, so that its internal energy and therefore, its temperature drops. Assume that the vertical mixing is so rapid as to be adiabatic and the quantityTP(1 – λ)/λ has a uniform value through the layers of troposphere.(M is molecular mass of the air, R is universal gas constant, g is gravitational acc., P and T are pressure and temperature respectively at the point under consideration and y is height.)Q. Mechanical equilibrium of the atmosphere requires that the pressure decreases with altitude according to . Assuming free fall acceleration to be uniform, then lapse rate is given by

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Which of the following statements is wrong?a)Ozone is not responsible for the greenhouse effect.b)Ozone can oxidize sulphur dioxide present in the atmosphere to sulphur trioxide.c)Ozone hole is the thinning of ozone layer present in the stratosphere.d)Ozone is produced in the upper stratosphere by the action of UV rays on oxygen.Correct answer is option 'A'. Can you explain this answer?
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