Which Pollutants Are Responsible For Marble Cancer Of The Taj Mahal?

Why is the marble structure of Taj Mahal affected by acid rain?

The salts calcium sulphate (CaSO4) and calcium nitrate (Ca(NO3)2) dissolve in water.

As a result, marble of the Taj Mahal would get corroded and lose its lustre due to its reaction with the acidic gases present in the atmosphere or with the acid rain..

Why the Taj Mahal is turning yellow?

Tiny insects from the drying Yamuna River into which the city pours its sewage crawl into the Taj Mahal, their excrement further staining the marble, an environmental lawyer told India’s Supreme Court. …

What is the condition of Taj Mahal now?

Taj Mahal is facing a big threat from pollution. The survey, commissioned by the Ministry of Environment, found that pollution levels in the city of Agra, where the Taj Mahal is located, had risen significantly over recent years as a result of growth in industry, traffic and population.

Which pollutant is dangerous for Taj Mahal?

It is the acid rain that is most dangerous for the monument. Indeed, the inadvertent emission of sulfuric oxide, due to road traffic, causes acid rain. This rain colors the Taj Mahal yellow, tarnishing it, and, worse, it erodes it, attacking what is most fragile at first: the sculptures and incrustations of stone.

Which of the following is responsible for marble cancer?

Sulphur dioxide, nitrogen dioxide are the gases that are responsible for marble cancer.

How is marble cancer caused?

This is called acid rain. The acids in the acid rain react with calcium carbonate of marble and degrade it. The phenomenon is called ‘Marble cancer’. The soot particles from the mathura oil refinery damage the colour of the monument, turning it into yellow.

How is acid rain a threat to the beauty of the Taj Mahal?

ACID RAIN IS AMAJOR THREAT TO THE TAJ MAHAL. WHEN THE ACIDS FALL ON THE MARBLE ,THEY REACT AND CAUSE “MARBLE CANCER” TO THE MONUMENT. THE SOOT PARTICLES FROM MARTHURA OIL REFINERY LEAD TO THE YELLOWING OF THE MARBLE.

What is causing damage to the Taj Mahal?

Damage to Taj Mahal (made up of marble) is caused by acid rain. … It consists of acids such as sulphuric acid and nitric acid. It corrodes metals, marbles, slate, stone etc. This phenomenon is called stone leprosy.

What is the marble cancer?

The slow corrosion (or eating up) of marble of a monument by acid rain is known as Marble cancer. … These gases react with the water vapour present in the atmosphere and form acids like sulphuric acid, nitric acid etc. These acids mix with rain and cause acid rain. This corrodes the marble of the monuments.

Which gases are responsible for acid rain?

Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

Why the Colour of Taj Mahal is changing?

India’s Taj Mahal Is Changing Color Because of Insect Feces and Pollution. India’s iconic white-marbled mausoleum Taj Mahal is changing its color, presenting spots of yellow, brown and green in pictures that shocked the country’s Supreme Court. … “Earlier it was turning yellow and now it is becoming brown and green.

What is responsible for marble cancer of the Taj Mahal?

acid rain corrodes the marble of the monument. this phenomenon is also known as marble cancer. his is the yellowing of the Taj Mahal which is being caused by air pollution, especially sulphur dioxide.