Iron ores found in Ireland and Britain are not suitable for production of high-q

Question

Iron ores found in Ireland and Britain are not suitable for production of high-quality steel because they contain too much of which one of the following elements:

(a) Sulphur
(b) Carbon
(c) Nitrogen
(d) Phosphorus?

The inside of the stack of a blast furnace is usually lined with:

(a) Steel sheets
(b) Ceramic refractories (c) Asbestos
(d) Water-cooled copper?

To improve the fuel-efficiency of the modern blast furnace, which one of the following may be added to the blast:

(a) O2 (b) N2 (c) H2 (d) CO2?

In steelmaking, basic slags are necessary for the removal of which element:

(a) Carbon
(b) Silicon
(c) Phosphorus (d) Oxygen?

Explanation / Answer

Iron ores found in Ireland and Britain are not suitable for production of high-quality steel because they contain too much of which one of the following elements:

Option - B,C

The inside of the stack of a blast furnace is usually lined with:

Option - B

To improve the fuel-efficiency of the modern blast furnace, which one of the following may be added to the blast:

Option- D

In steelmaking, basic slags are necessary for the removal of which element:

Option- A,B,C

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