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A metal obtained directly by roasting of...

A metal obtained directly by roasting of its sulphide ore is

A

`Cu`

B

`Pb`

C

`Hg`

D

`Zn`

Text Solution

Verified by Experts

The correct Answer is:
C
When conc. `HgS` ore is roasted
`HgS+O_(2) overset(773-873K)rarrHg+SO_(2)`
At this temperature, mercury vaporises and the vapours are condensed to the liquid metal. Marcury so obtained is about `99.7%` pure.
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A2Z-GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF METALS-Section D - Chapter End Test
  1. A metal obtained directly by roasting of its sulphide ore is

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  2. Consider the following statements in the extraction of iron from haema...

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  3. Oxygen and hydrogen gases are produced at the anode and cathode respec...

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  4. The major role of flourspar, CaF(2) which is added in small amount in ...

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  5. In extractive metallurgy of lead, the reduction of the roasted ore to ...

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  6. The main reaction occuring in blast furnace during the extraction of i...

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  7. Select similarity between alkali metals and coinage metals

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  8. If the impurity in a metal has a greater affinity for oxygen and is mo...

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  9. In which of the following proeces, roasting and self-reduction is requ...

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  10. Extraction of Ag from sulphide ore and removel of unreacted silver bro...

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  11. Which of the following has maximum thermodynamic spontaneity at 400^(@...

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  12. van Arkel method of purification of metals involves converting the met...

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  13. Gold is extracted by hydrometallurgical procees based on its property

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  14. Lapis-Lazuli' is a blue coloured precious stone. It is mineral of the ...

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  15. Which process of reduction of mineral to the matel is suited for the e...

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  16. Which is correct

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  17. Wolframite ore is separated from tinstone ore by the process of

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  18. In order to refine “blister copper” it is metled in a furnace and is s...

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  19. Which of the following metal is extracted by amalgamation process?

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  20. The final step for the extraction of copper from copper from copper py...

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  21. How is limestone used in Fe extraction?

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