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NEET UG CHEMISTRY MCQ: S-BLOCK ELEMENTS
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Analyzing
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A white solid reacts with dil. to give colourless gas that decolourises aqueous bromine. The solid is most likely to be:
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Correct option: D
Sodium thiosulphate
Option D (Sodium thiosulphate) is correct because it reacts with dilute HCl to produce sulfur dioxide, which decolorizes aqueous bromine.
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