KCET 2014 Chemistry Solved Paper

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Question : 51 of 60
 
Marks: +1, -0
A crystalline solid X reacts with dil. HCI to liberate a gas Y. Y decolourises acidified KMnO4. When a gas ‘Z’ is slowly passed into an aqueous solution of Y, colloidal sulphur is obtained. X and Z could be, respectively
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