Understanding Taj Mahal's Marble Cancer Cause
The term "Marble Cancer" refers to the deterioration and discoloration of marble structures caused by environmental pollution, particularly acid rain.
Role of Sulphur Dioxide
- The Taj Mahal is built primarily of marble, which is calcium carbonate (CaCO3).
- Air pollution, especially sulphur dioxide (SO2) released from nearby industries and vehicles, is a major cause.
- SO2 reacts with oxygen (O2) and water (H2O) in the atmosphere to form sulphuric acid (H2SO4).
- This acid then falls on the Taj Mahal as acid rain.
- The sulphuric acid reacts chemically with the marble (CaCO3), causing it to erode and lose its shine.
- The simplified chemical reaction is:
CaCO3(s) + H2SO4(aq) → CaSO4(aq) + H2O(l) + CO2(g)
- Calcium sulphate (CaSO4) is more soluble than calcium carbonate, leading to the gradual destruction of the marble surface.
Therefore, the primary reason for the Taj Mahal suffering from "Marble Cancer" is the presence and effects of sulphur dioxide in the atmosphere, leading to acid rain.
Important Questions from Environmental pollution
Photochemical smog is a resultant of the reaction among
Which of the following is NOT responsible for the degradation of our environment?
With reference to furnace oil, consider the following statements:
1. It is a product of oil refineries.
2. Some industries use it to generate power.
3. Its use causes sulphur emissions into environment.
Which of the statements given above are correct?
Why is there a concern about copper smelting plants?
1. They may release lethal quantities of carbon monoxide into environment.
2. The copper slag can cause the leaching of some heavy metals into the environment.
3. They may release sulphur dioxide as a pollutant.
Select the correct answer using the code given below.
Magnetite particles, suspected to cause neurodegenerative problems are generated as environmental pollutants from which of the following?
1. Brakes of motor vehicles
2. Engines of motor vehicles
3. Microwave ‘Stoves within homes
4. Power plants
5. Telephone lines
Select the correct answer using the code given below.
