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Chemistry

Give two uses of the following components present in air:

(a) oxygen

(b) nitrogen

(c) carbon dioxide

(d) water vapour

Air

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Answer

(a) Oxygen

  1. For respiration in plants and animals
  2. Oxygen is an essential component of burning or combustion

(b) Nitrogen

  1. Nitrogen is needed to prepare a vital nutrient protein.
  2. Food packaging and storing food.

(c) Carbon dioxide

  1. Dry ice(solid carbon dioxide) is used as a refrigerant.
  2. Carbon dioxide is used to prepare fizzy drink like soda-water.

(d) Water vapour

  1. Water vapour present in the air provides moisture for both plants and animals.
  2. It also helps in predicting climatic conditions of a particular area.

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