Ratan with his family went to visit the Taj Mahal in Agra.
Ratan was very excited, it was his first visit to the Taj Mahal.
Through out the journey he kept asking about the history and beauty of Taj Mahal.
Finally Ratan was in Agra and he saw the Taj Mahal.
Ratan was very happy but one thing disappointed him. He could not find Taj as white as he had seen in his book.
Taj Mahal looked yellowish to him than white. He asked his father about it.
Ratan's father told him that Taj is turning yellow majorly due to air pollution.
His father said that air pollution is not only harmful for Taj Mahal but also for the environment and us.
Let us help Ratan to understand air pollution.
An increase in the content of harmful substances in air is called 'air pollution'. Such harmful substances are called 'pollutants'.
Burning of fossil fuels contributes maximum to air pollution.
Fossil fuels like coal and petroleum on burning produce oxides of nitrogen, carbon and sulphur.
Burning of fossil fuels also increases the suspended particles in air. These are mostly unburnt carbon particles or hydrocarbons.
Industries are also the source of air pollution. Chief industrial gaseous pollutants are oxides of nitrogen, carbon and sulphur.
Now let us understand the effect of air pollution.
Polluted air on breathing causes respiratory problems.
Study has shown that breathing regularly air having high content of air pollutants causes allergies, heart diseases and even cancer.
During winter season, fog intensifies on addition of smoke, thus forming smog.
Smog reduces visibility. It is harmful for senior citizens, children, and people with heart and lung conditions such as bronchitis, and asthma.
One of the ill effect of air pollution is acid rain. Let us find about it.
Oxides of nitrogen and sulphur when mixed with rain water produces acid rain.
Acid rain reacts with the materials of the monuments like stones, metals and erode them.
Acid rain due to industrialization in Agra is damaging the Taj Mahal.
Many industries in the surrounding areas release large quantities of the oxides of sulphur and nitrogen. Like oil refineries in Mathura.
Acid rain reacts with the marble (calcium carbonate) of Taj Mahal, thus turning it yellow.
Acid rain also affects plant and aquatic life.
Burning of fossil fuels like coal and petroleum produce oxides of nitrogen, carbon and sulphur.
Oxides of nitrogen and sulphur produces acid rain which is harmful for plants, aquatic life and monuments.
During winter fog intensifies on addition of smoke, thus forming smog.
Air pollution causes respiratory disorders, allergies, heart problems and even cancer.