Sarthaks Test
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Which of the following statements are correct for SO2 gas?

(i) It acts as bleaching agent in moist conditions.

(ii) It’s molecule has linear geometry.

(iii) It’s dilute solution is used as disinfectant.

(iv) It can be prepared by the reaction of dilute H2SO4 with metal sulphide.

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(i), (iii)

(i) It acts as bleaching agent in moist conditions.

(iii) It’s dilute solution is used as disinfectant.

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(i) (iii) SO2 act as a bleaching agent in present of moisture. This is due to reducing nature of SO2

SO2+2H2O --->H2SO4+2H

Coloured matter + H --->colourless matter. Its dilution is used as disinfectant.

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