● Tropospheric pollution: In the presence of pollutant,
SO2 cunverts into
SO3 2SO2+O2→2SO3 ● In spring season, sunlight breaks
HOCl and
Cl2 to give chlorine radicals.
HOClH(g)+(g) These chlorine radicals deplete ozone layer
● High level of sulphur causes acid rain which reacts with marble and causes discolouring and disfiguring
CaCO3+H2SO4→CaSO4+H2O +CO2 ● A chain reaction occurs from interaction of NO with sunlight in which NO is converted to
NO2 which absorb energy from sunlight and breaks into NO and
O, which causes photochemical smong.
NO2(g)NO(g)+O(g)