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Roasting of sulphides gives the gas X as...

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

A

`CO_2 `

B

`SO_3`

C

`H_2 S`

D

`SO_2`

Text Solution

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The correct Answer is:
D
Roasting of sulphides gives `SO_2`
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MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-COMPETION FILE (Objective Questions) (Multiple Choice Question from competitive examinations)
  1. Which ore of the following is a mineral of iron ?

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  2. Which one of the following is not a sulphide ore ?

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  3. Roasting of sulphides gives the gas X as a by product. This is a colou...

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  4. Sphalerite is concentrated by

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  5. In the extraction of copper from its sulphide ore, the metal finally o...

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  6. 'Metals are usually not found as nitrates in their ores''. Out of the ...

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  7. Match the items of Column I with item of Column II and assign the corr...

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  8. Extraction of gold and silver involves leaching with CN^(-)ion.silver ...

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  9. Considering Ellingham diagram, which of the following metals can be us...

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  10. Which one is malachite from the following

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  11. Identify the reaction that does not take place in a blast furnace

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  12. In the alumino-thermite process, Al acts as :

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  13. In view of the signs of Delta(r)G^(@) for the following reactions : ...

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  14. Which method of purification is represented by the following equation?...

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  15. The function of potassium ethyl xanthate in froth floatation process i...

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  16. The first step in the extraction of copper from copper pyrites

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  17. The statement that is not correct is

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  18. Roasted copper pyrite on smelting with sand produces

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  19. In the correct of the Hall-Heroult process for the extraction of Al, w...

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  20. Which one of the following ores is the best concentrated by froth floa...

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