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Roasted tin-stone ore after washing with...

Roasted tin-stone ore after washing with water is known as

A

Moistuyre is removed

B

As and S are removed in the form of their volatile oxides

C

Any ferrous oide is oxidised to ferric oxide.

D

The mass becomes compact and thus makes it sutiable for ready reduction to metallic iron.

Text Solution

Verified by Experts

The correct Answer is:
D
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Knowledge Check

  • Mark the wrong staement among the following. The iron ore after washing is roasted with a little coasl in excess of air. During roasting

    A
    Moistuyre is removed
    B
    As and S are removed in the form of their volatile oxides
    C
    Any ferrous oide is oxidised to ferric oxide.
    D
    The mass becomes compact and thus makes it sutiable for ready reduction to metallic iron.

  • Statement 1 : The tin obtained after smelting of black tin is known as block tin. Statement 2 : The tin can be cast into ingots or black.

    A
    Statement 1 is true, statement 2 is true : statement 2 is a correct explanation for statement 1
    B
    Statement 1 is true, statement 2 is true , statement 2 is not a correct explanation for statement 1
    C
    Statement 1 is true, stetament 2 is false
    D
    Statement 1 is true, statement 2 is statement 2 is true

  • The amount of water held by the soil after drainage is known as

    A
    Mineral water
    B
    Soil water
    C
    Field capacity
    D
    Gravitational capactiy
    • NARAYNA-METTALURGY-Extraction
    1. Roasted tin-stone ore after washing with water is known as

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    2. Which of the following metals can be oriented directly during the roas...

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    3. Which of the followigng metal is obtained by the reduction of metal ox...

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    4. Galena (PbS) on heating in limited supply of air gives lead metal. Thi...

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    5. Which of the following oxides is reduced by water gas to obtain the me...

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    6. For which one of the following reaction, the graph of DeltaG against T...

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    7. Which of the following metal oxides are reduced by Co ?

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    8. Some statement about Ellingham diagram (a) Increase in the slope of ...

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    9. Consider the following reaction at 1000^(@)C (A) Zn((s))+(1)/(2)O(2(...

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    10. Cabon cannot reduce Fe(2)O(3) to Fe at a temperature below 983K becaus...

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    11. In the blast furncae the reaction that occurs in the zone of heat abso...

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    12. The flux used in the extraction of iron from Haematite in te blast fur...

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    13. Cast iron contains phosphorus as impurity. In Bessemerisation of this ...

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    14. Which of the following is not a correct statement

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    15. Pudding process is used in the manufacture of

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    16. The calcicum phosphate slag is commerically

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    17. In the extraction of copper the smelt formed in the blast furnace cont...

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    18. In Bessemer converter Cu(2)S is converted in to blister copper in

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    19. The fuel used in Belgion process is

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    20. Spelter is impure form of

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