ICSE Class 7 Chemistry Question 8 of 20

Air & Atmosphere — Question 11

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Question

Question 11

Give the environment effect of three polluting gases with a reason why nitrogen is not considered a polluting gas.

Answer

Environment effect of three different polluting gases:

  1. Sulphur dioxide — cause respiratory problems
  2. Nitrogen dioxide — initiates acid rainfall
  3. Dust & smoke particles — causes respiratory problems and precipitates rain.

Nitrogen is not considered a polluting gas for the following reasons:

  1. It is an inert or unreactive gas.
  2. It is utilized by plants for their growth and development.
  3. It controls combustion by diluting the activity of oxygen.
  4. It is not a greenhouse gas and does not contribute to global warming.