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Mica and Limestone

In the manufa...

Question

In the manufacture of iron, limestone is added in the blast furnace to form
A,,gangue
B,,slag
C,,calcium metal
D,,calcium carbonate

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Solution

limestone is used to remove impurities in the furnace. It is to form slag.
B is correct answer.

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Q. When limestone is added to the blast furnace in the metallurgy of iron, the calcium ions can form:

In metallurgy of iron, when limestone is added to the blast furnace, the calcium ends up in:

Q. In the metallurgy of iron, when limestone is added to the blast furnace, the calcium ions end up in:

Q. Assertion :Limestone added in the blast furnace decomposes to give

C a O

which forms slag in the molten state and separates out from iron. Reason: The iron obtained from the blast furnace contains about 4% carbon and many impurities like

S, P, S i, M n,

Q. (a) In smelting process carried out in blast furnace for the exgtraction of iron, lower region of the furnace has the highest temperature.
(b) Formation of

C O

{C O}_{2}

and coke reduces the temperature of the middle region of blase furnace.
(c) Limestone is taken blast furnace as flux.
(d) Silica present in the ore as gangue is converted to fusible slag by the process of reduction
Which of the following regarding the process of smelting is correct?

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