During the presence of \( \mathrm{SO}_{3}^{2-} \) and \( \mathrm{S}^{2-} \) in a mixture, additi...
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0During the presence of \( \mathrm{SO}_{3}^{2-} \) and \( \mathrm{S}^{2-} \) in a mixture, addition of dil. \( \mathrm{H}_{2} \mathrm{SO}_{4} \), one notice that :
(A) \( \mathrm{SO}_{2} \) and \( \mathrm{H}_{2} \mathrm{~S} \) are not formed
(B) \( \mathrm{SO}_{2} \) and \( \mathrm{H}_{2} \mathrm{~S} \) formed during change undergoes a redox change forming colloidal sulphur and thus, no smell
(C) a smell of burning sulphur
(D) a smell of rotten egg
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