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An Intiative by Sri Chaitanya
a
Combination between dinitrogen and dihydrogen to form ammonia in the presence of finely divided iron
b
Decomposition of ozone in presence of nitrogen monoxide
c
Oxidation of sulphur dioxide into sulphur trioxide in the presence of oxides of nitrogen
d
Hydrolysis of sugar catalysed by H+ ions
answer is A.
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