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Question

Identify the pollutant gases which are responsible for the discolouration of marbles in the Taj Mahal.

A
SO2 and NO2
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B
SO2 and O3
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C
CH4 and NO2
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D
O3 and CO2
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Solution

The correct option is A SO2 and NO2
Industries present near the Taj Mahal produce a lot of NO2 and SO2 gases which react with water, oxygen and other gases to form sulphuric acid and nitric acid. These gases are responsible for acid rain and the subsequent discolouration of marbles.

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