1.

The pollution due to oxides of sulphur gets enhanced due to the presence of:(a) particulate matter(b) ozone(c) hydrocarbons(d) hydrogen peroxideChoose the most appropriate answer from the options given below:(1) (a), (b), (d)only(2) (b), (c), (d)only(3) (a), (c), (d) only(4) (a), (d) only

Answer»

(1) (a), (b), (d)only

The presence of particulate matter in polluted air catalyses the oxidation of sulphurdioxide to sulphur trioxide.

2SO2(g) + O2(g) → 2S03(g)

The reaction can also be promoted by ozone and hydrogen peroxide.

SO2(g) + O3(g) → SO3(g) + O2(g)

SO2(g) + H2O2(l) → H2SO4(aq)



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