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General Principles And Processes Of Isolation Of Elements

Question
CBSEENCH12011122
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Roasting of sulphides gives the gas X as a by-product. This is a colourless gas with the choking smell of burnt sulphur and causes great damage to respiratory organs as a result of acid rain. Its aqueous solution is acidic acts as a reducing agent and its acid has never been isolated. The gas X is

  • H2S

  • SO2

  • CO2

  • H2SO3

Solution

B.

SO2

SO2 gas is obtained when any sulphide ore is roasted.
2 space straight M subscript 2 straight S space plus 3 straight O subscript 2 rightwards arrow space 2 straight M subscript 2 straight O space plus stack 2 SO subscript 2 with straight x below space
This gas (x) SO2 exhibits all the characteristics given in the equation.

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