Answer :

sulphur dioxide act as bleaching agent in moist conditions because of reducing nature of SO2

SO2 + 2H2O H2SO4 + 2H


COLOURED SUBSTANCE + H = COLOURLESS SUBSTANCE


Its dilute solution is also used as disinfectant.


It does not have linear shape. It has trigonal planar geometry and bent shape.


Hence the correct options are (i)and(iii)

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