Which group of chemicals threatens our monuments?
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Answered by
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Hey mate...
Our monument has a threat of Acid rain i.e. rain below ph of 5.6
This rain include chemicals NO2 in high amount. Further chemicals are HNO3 SO2 H2SO4 H2SO3 SO3 etc..
HOPE IT HELPS...
Answered by
0
acid rain
please mark me as brainliest
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