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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(773-873 K)rarr Hg + SO_2`
At this temperature, mercury vaporises and the vapours are condensed to the liquid metal. Mercury so obtained is about 99.7% pure.
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ERRORLESS-GENERAL PRINCIPLES & PROCESSES OF ISOLATION OF ELEMENTS-NCERT BASED QUESTIONS (ROASTING & CALCINATION)
  1. Roasting is done generally in case of

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  2. Heating of pyrites in air for oxidation of sulphur is called Heating...

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  3. The reaction 2ZnS +3O(2) rarr2ZnO +2SO(2) in the metallurgical process...

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  4. Roasting is done in

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  5. Roasting of copper pyrites is done:

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  6. A metal obtained directly by roasting of its sulphide ore is

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  7. Calcination is used in matallurgy for removal of

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  8. Which of the following processes involves smelting ?

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  9. A Substance which reacts with gangue to form fusible material is calle...

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  10. Refractory metals are used in construction of furnances because

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  11. The underlying of blast furnace is made of

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  12. Which of the following substance can be used for drying neutral or bas...

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  13. In the modern blast furnaces, the charge consists of a mixture of

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  14. In a lime kiln, to get higher yield of CO(2) the measure that can be t...

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  15. During the extraction of gold the following reactions takes place Au...

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  16. The reduction of zinc oxide with coke occurs at temperature

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  17. Choose the correct option of temperature at which carbon reduced FeO t...

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  18. Find the area of figure given below.

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  19. For the reduction of FeO at the temperature corresponding to point D, ...

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  20. Direction (Q. Nos. 17-20) Answer the questions on the basis of figure ...

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