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Which of the following srtatement above ...

Which of the following srtatement above the advantage of masting of sulphide are before reduction is not true?

A

The `Delta_f G^@` of the sulphide is greater than those for `CS_2` and `H_2 S`

B

The `Delta_f G^@` is negative for roasting of sulphide ore to oxide.

C

Roasting of the sulphide to the oxide is thermodynamically feasible.

D

Carbon and hydrogen are suitable reducing agents for metal sulphides

Text Solution

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The correct Answer is:
D
Carbon and hydrogen are suitable reducing agents for metal sulphides
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Knowledge Check

  • Which of the following statement, about the advantage of rasting of sulphide ore before reduction is not true?

    A
    The `DeltaG_(y)^(@)` of the sulphide is greater than those for `CS_2` and `H_(2)S`.
    B
    The `DeltaG_(f)^(@)` is negative for roasting of sulphide ore to oxide.
    C
    Roasting of the sulphide to the oxide is thermodynamically feasible.
    D
    Carbon and hydrogen are suitable reducing agents for metal sulphides.

  • Which of the following statements about the advantage of roasting of sulphide ore before reduction is not true ?

    A
    The `Delta G^(@)` of the sulphide is greater than those of `CS_(2) " and " H_(2)S`.
    B
    The `DeltaG^(@)` is negative for roasting of sulphide ore to oxide.
    C
    Roasting of sulphide to oxide is thermodynamically feasible
    D
    Carbon and hydrogen are not suitable reducing agents for metal sulphides.

  • Which of the following statements about the advantage of roasting of sulphide ore before reduction is not true ?

    A
    The `DeltaG^(@)` of the sulphide is greater than those for `CS_(2)` and `H_(2)S`
    B
    The `DeltaG^(@)` is negative for roasting of sulphide ore to oxide.
    C
    Roasting of the sulphide to the oxide is thermodynamically feasible
    D
    Carbon and hydrogen are suitable reducing agents for metal sulphides
    • MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-COMPETION FILE (Objective Questions) (Multiple Choice Question from competitive examinations)
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    2. Which one of the following ores is treated by chemical leaching

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    3. Which of the following pairs of metals uis purified by van arkel meth...

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    4. which of the following electronts is present as the impurity to the m...

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    5. Aluminium is extracted from Alumina (Al(2)O3 ) by electrolysis of a mo...

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    6. Which ore of the following is a mineral of iron ?

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

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

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    9. Sphalerite is concentrated by

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

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

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

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

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

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    15. Which one is malachite from the following

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

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

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

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

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

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