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प्रश्न
Explain the effect of sulphur dioxide on the atmosphere.
उत्तर
Harmful effects of oxides of sulphur:
It causes headaches, vomiting and even death due to respiratory failure.
It destroys vegetation and weakens building materials/constructions.
It mixes with smoke and fog to form smog, which is very harmful.
It is oxidised by atmospheric oxygen into sulphur trioxide (SO3) which combines with water to form sulphuric acid (H2SO4). Sulphuric acid is the cause of acid rain.
2SO2(g) + O2(g) → 2SO3(g)
SO3(g) + H2O →H2SO4(aq)
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