SO2 can be removed by using the followingSO2 +2H2S→ 2H2O +3SSO2 +Na2SO3 +H2O → 2NaHSO3This is called
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a
synergistic process
b
non-regenerative process
c
desulphonation process
d
regenerative process
answer is D.
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Detailed Solution
SO2 content of the air can be removed by using(a) H2S gas which precipitates as sulphur2H2S +O2→ 2H2O +3S(b) Na2SO3 which dissolves SO2Na2SO3 +H2O+SO2 → 2NaHSO3