What does El Nino effect mean?

  1. Rise in temperature due to global warming going to result in odd climatic changes
  2. Rise in use of chemical fertiliser going to cause metabolic disorder
  3. Rise in use of CFCs going to cause ozone depletion
  4. Rise in use of Plastic going to destroy sea animals
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Relative contribution of various greenhouse gases to total global warming will not be

  1. Carbon dioxide-60%
  2. Methane-20%
  3. CFCs-14%
  4. N2O-12%
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Ozone

  1. Ozone hole is the area above Antarctica
  2. Ozone layer is the thinnest above Antartica
  3. Ozone thickness is measured in Dobson unit
  4. All of these
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Ozone hole over Antarctica develops each year between

  1. Early October and Late December
  2. Late August and Early October
  3. Early August and Late October
  4. Late October and Early December
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Bad Ozone

  1. Formed in lower atmosphere
  2. Formed in Troposphere
  3. Harms plants and animals but is not lethal
  4. All of these
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Good ozone is

  1. Found in the upper strata of the atmosphere
  2. Found in Stratosphere
  3. Acts as a shield to UV light
  4. All of these
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The thickness of ozone is measured in

  1. Dobson units
  2. Decibel
  3. Centi Morgan
  4. Centi meter
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UV rays are highly injurious to living organisms

  1. Because DNA and Protein preferentially refract UV light
  2. Because DNA and Protein preferentially radiate UV light in the form of heat energy
  3. Because DNA and Protein preferentially absorb UV light and as a result chemical bonds are broken
  4. Both B and C
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The thickness of Ozone is measured in

  1. Db
  2. DU
  3. DS
  4. Dm
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In stratosphere

Find the wrong one out

  1. Ozone is formed by the action of UV rays on molecular Oxygen
  2. Ozone is degraded there
  3. There is a balance between formation and degradation of ozone
  4. There will be accumulation of Chlorofluorocarbons or CFCs which are acted upon by UV rays and protects the ozone layer.
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