Q.

SO2  gas when dissolved in water forms an oxyacid of sulphur (in +4 oxidation state) which on heating at  150°C  in a closed container forms products. The product obtained is treated with BaCl2 solution. What is/are the observation(s)?

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a

evolution of SO2

b

No PPT

c

White turbidity

d

White PPT 

answer is B, D.

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