Chemistry

Acid Rain

Acid Rain

  • The rain which contains acid is known as acid rain. Acid rain also occurs in snow, fog, and in dust form.
  • Acid Rain generally has a pH of 4.2 – 4.6.

Causes of Acid Rain

  • Burning of fossil fuels.
  • Exhaust from automobiles.
  • Volcanic eruption.
  • Burning of coal.
  • Manufacturing, oil refineries and other industrial waste.
  • Power plants release harmful gases.
  • All these activities release oxides of sulphur, carbon and nitrogen which is the main cause of acid rain.

Effects of Acid Rain

  • Acid rain pollutes aquatic environment which leads to the death of many marine organisms.
  • Acid rain leaches nutrients from the soil like aluminium, magnesium, etc.
  • It decreases the fertility of the soil by decreasing nitrate level.
  • Discolouration and foliage of leaves.
  • Withering and shrinking of leaves.
  • It kills many useful bacterias which are useful for the environment.
  • It causes skin diseases in human beings.
  • It causes irritation in the eyes.
  • Sometimes it leads to the inflammation of the respiratory tract.
  • It damages the buildings and monuments made up of stones and metals.

Prevention of Acid Rain

  • Uses clean sources of energy such as CNG instead of petroleum and diesel.
  • Remove sulphur dioxide from flue gas.
  • Remove oxides of sulphur and oxides of nitrogen before releasing.
  • Use public transport to lessen the exhaust from automobiles.
  • Use LPG for cooking purposes instead of a gas fire.
  • Use higher chimneys to the exhaust of harmful gases.

Examples of Acid Rain

  •  which is made of copper which has been destroyed by culminating action of acid rain and oxidation for 30 years, therefore it is becoming green in colour.
  • Taj Mahal is one of the 7 wonders of the which are made up of white marble. It has turned yellow in  colour due to acid rain.

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