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  3. Chemistry
  4. The pollution due to oxides of sulphur gets enhanced due to the presence of: (a) particulate matter (b) ozone (c) hydrocarbons (d) hydrogen peroxide Choose the most appropriate answer from the options given below:

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Q. The pollution due to oxides of sulphur gets enhanced due to the presence of :
(a) particulate matter
(b) ozone
(c) hydrocarbons
(d) hydrogen peroxide
Choose the most appropriate answer from the options given below:

NEETNEET 2022Environmental Chemistry

Solution:

The presence of particulate matter in polluted air catalyses the oxidation of sulphurdioxide to sulphur trioxide.
$2 SO _{2}( g )+ O _{2}( g ) \rightarrow 2 SO _{3}( g )$
The reaction can also be promoted by ozone and hydrogen peroxide.
$SO _{2}( g )+ O _{3}( g ) \rightarrow SO _{3}( g )+ O _{2}( g ) $
$ SO _{2}( g )+ H _{2} O _{2}( l ) \rightarrow H _{2} SO _{4}( aq )$