Question
Which of the following is responsible for turning Taj Mahal yellow?
The correct answer is
Sulphur dioxide
Taj Mahal Yellowing Cause Explained
The yellowing of the Taj Mahal's white marble is primarily caused by air pollution.
The key pollutant responsible is Sulphur dioxide (SO2).
- Sulphur dioxide reacts with oxygen and water in the atmosphere to form sulfuric acid (H2SO4).
- This acid falls on the monument as acid rain.
- The acid reacts with the calcium carbonate (CaCO3) of the marble, causing a chemical change that results in the yellow discoloration. The reaction can be simplified as:
CaCO3 + H2SO4 → CaSO4 + H2O + CO2
Therefore, Sulphur dioxide is the pollutant responsible for the Taj Mahal turning yellow.
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Important Questions from Equilibrium
What is the pH of a solution prepared by dissolving $0.0025$ moles of $HNO_3$ in $250\,mL$ of water?
Which species acts as acid like behaviour in the following reaction?
\(HPO_4^{2-}+NH_4^{1+}\rightarrow H_2PO_4^{1-}+NH_3\)
Aqueous solution of CH 3COONa is:
pH of a neutral solution is ___________.
Limestone is a sedimentary rock composed primarily of _________
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