Question

If you see orange colored smog with an unpleasant Oder you know that there is ______ pollution?

A SO2

B O3

CNO2

D H2O

Answer 1

• If there is orange colored smog with an unpleasant smell, there is
  `\bold{\mathrm{NO}_(2)}` pollution.

• Humans, as well as natural sources, contribute to the release of
  `\mathrm{NO}_(2)` gases in the atmosphere.

Step-by-step explanation:

• Nitrogen Dioxide is a gas that is flammable and colorless in nature. It is a deep red and orange colored gas that can be very harmful to our health.

• It is toxic in nature and is very reactive with other gases and compounds.

• Nitrogen oxides can come from volcanoes, lightning strikes, decomposition, and man-made sources such as vehicle exhaust, industrial emissions.