Multiple choice

Consider the following statements:

  1. The amount of atmospheric ozone is measured by ‘Dobson Spectrometer’ and is expressed in Dobson unit.
  2. Chlorofluorocarbons are most likely to be present in photochemical smog.

Which of the given statements is/are true?

  1. Only 1

  2. Only 2

  3. Both 1 and 2

  4. Neither 1 nor 2
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  1. The amount of atmospheric ozone is measured by ‘Dobson Spectrometer’ and is expressed in Dobson unit.
    1. Chlorofluorocarbons are most likely to be present in photochemical smog. Photochemical smog is a form of pollution that is caused by the reaction of sunlight with other pollutants such as hydrocarbons and nitrogen oxides. Photochemical smog can be seen sitting over the skylines of large cities and near factories.

Keep practicing — related questions