Write the name of gas produced in Mathura refineries which can damage the great historical monument “Taj Mahal”?
Answers
A new Indian government survey has revealed that the Taj Mahal, the nation's best-known monument, is again facing a major threat from pollution.
The report, compiled by India's National Environment Engineering Research Institute, shows that measures taken after previous scares that the 17th-century tomb was being irreparably damaged by air and water pollution are failing.
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.
The £90m government programme, launched between 1998 and 2000 after the monument's famous white marble was seen to be turning yellow, has had some impact, the report says, but not enough to keep up with pollution around the site.
When launched, the programme received global attention, with President Bill Clinton saying that pollution had done "what 350 years of wars, invasions and natural disasters have failed to do [and] begun to mar the magnificent walls of the Taj Mahal".
Vehicles are now banned from within 500 metres of the monument and an LED display gives a running count of air pollution.
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But the new report found that emissions of nitrogen oxide and particulates, for example, had reached levels higher than those that prompted a supreme court intervention to force authorities to act a decade ago.
Environmental campaigners in Agra, a bustling manufacturing centre in the populous and poor northern Indian state of Uttar Pradesh, said that the Taj Mahal was also threatened by dropping water tables and pollution from the river Yamuna, which runs alongside the structure. "The levels are much lower than they were when it was built and there is a serious risk that the whole construction will be destabilised as its foundations are made of wood and need to be kept moist to avoid subsiding," said Ashwina Kumar Mishra, a local activist.
"It is the most beautiful place in India and it will be a tragedy if something bad happens to it."
Government archeologists working at the Taj Mahal dismissed the claims of activists as "rumours". "These stories keep coming up without facts," said ID Diwedi, a senior archeologist at the site.
Mathura Refinery releases toxic gases like oxides of sulphur into air.
When rainfall occurs Sulphur Dioxide combines with rain water to form sulphuric acid.
When this acid water falls on Taj Mahal which is made up of marble stone origin of marble occurs.
So Mathura Refinery poses problems to Taj Mahal.