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KCET2014ChemistryStates of Matter

A crystalline solid ( X ) reacts with dil. ( HCl ) to liberate a gas ( Y . Y ) decolourises acidified ( KMnO ₄ ). When a gas ' ( Z ) ' is slowly passed into an aqueous solution of ( Y ), colloidal sulphur is obtained. ( X ) and ( Z ) could be, respectively

Options

  1. A( Na ₂ SO ₄, H ₂ ~S )
  2. B( N a₂ S O₄, S O₂ )
  3. C( Na ₂ ~S , SO ₃ )
  4. D( N a₂ S O₃, H₂ S )

Correct answer

D. ( N a₂ S O₃, H₂ S )

Step-by-step solution

The reactions involved are,

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