Geography
Not only the human being are affected by pollution but also the monuments like Taj Mahal, Lotus Temple which are made of white marble, and limestone are changing in their original colour, becoming yellowish or greyish.
- Name specific type of pollution which is responsible for this event.
- Explain how does it change the colour of the monuments?
Answer
The specific type of pollution responsible for this damage is acid rain, which is a result of air pollution.
Gases like sulphur dioxide (SO2) and nitrogen dioxide (NO2), released from vehicles and industrial activities, mix with moisture in the atmosphere to form acidic compounds. When this acidic rain falls on marble or limestone structures, it reacts with the minerals in the stone, causing discolouration, surface erosion, and a yellowish or greyish appearance. Over time, this leads to the gradual deterioration of the monuments.
Related Questions
Acid rainfall is a result of the burning of fossil fuel.
As per the report of National Oceanic and Atmospheric organization Sixty-five percent of the estuaries and coastal waters in the contiguous U.S. that have been studied by researchers are moderately to severely degraded by excessive nutrient inputs. Excessive nutrients lead to the growth of many algae in turns death of many fish.
Identify the process.
Why is the concentration of excessive nutrients responsible for the death of aquatic animal?
Assertion (A): Winter smog is a frequent phenomenon in Delhi.
Reason (R): Delhi and its surrounding areas are industrially very much developed which comprises many chemical factories.
- Both A and R are true and B is the correct explanation of A.
- Both A and R are true and B is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A): The people working in the brick kiln are affected by lung diseases.
Reason (R): Brick kilns mostly use coal to burn the bricks.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true and R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.