Identify the correct statement from the following :

Question

Ferric oxide in blast furnace's upper half is mainly reduced by:

Answer 1

To determine the correct statement, we need to evaluate each option based on our knowledge of materials and metallurgy.

Wrought iron is impure iron with 4\% carbon:
- Wrought iron is actually a very pure form of iron, containing less than 0.1\% carbon.
- This statement is incorrect because wrought iron has a much lower carbon content compared to the typical 2\%-4\% found in products like cast iron.
Blister copper has blistered appearance due to evolution of CO_2:
- Blister copper gets its name from blisters formed on its surface, but these are not due to CO_2.
- The blisters are caused due to the release of sulfur dioxide (SO_2) gas as the copper is refined.
- This statement is incorrect because the gas involved is SO_2, not CO_2.
Vapour phase refining is carried out for Nickel by Van Arkel method:
- The Van Arkel method is a chemical process used to purify metals like titanium and zirconium, involving the conversion of metal into a more volatile form.
- This method is not used for nickel. Nickel is often refined by Mond's process, which involves forming volatile nickel carbonyl and then decomposing it to pure nickel.
- This statement is incorrect because the Van Arkel method is not applicable to nickel.
Pig iron can be moulded into a variety of shapes:
- Pig iron is an intermediate product of the iron industry and has a high carbon content, typically ranging from 3.5\% to 4.5\%.
- It is used to produce cast iron by remelting and shaping in molds.
- This statement is correct because pig iron can indeed be molded into various shapes when it is converted and cast.

Based on the above explanations, the correct option is: Pig iron can be moulded into a variety of shapes.

Answer 2

To determine the correct statement, we need to evaluate each option based on our knowledge of materials and metallurgy.

Wrought iron is impure iron with 4\% carbon:
- Wrought iron is actually a very pure form of iron, containing less than 0.1\% carbon.
- This statement is incorrect because wrought iron has a much lower carbon content compared to the typical 2\%-4\% found in products like cast iron.
Blister copper has blistered appearance due to evolution of CO_2:
- Blister copper gets its name from blisters formed on its surface, but these are not due to CO_2.
- The blisters are caused due to the release of sulfur dioxide (SO_2) gas as the copper is refined.
- This statement is incorrect because the gas involved is SO_2, not CO_2.
Vapour phase refining is carried out for Nickel by Van Arkel method:
- The Van Arkel method is a chemical process used to purify metals like titanium and zirconium, involving the conversion of metal into a more volatile form.
- This method is not used for nickel. Nickel is often refined by Mond's process, which involves forming volatile nickel carbonyl and then decomposing it to pure nickel.
- This statement is incorrect because the Van Arkel method is not applicable to nickel.
Pig iron can be moulded into a variety of shapes:
- Pig iron is an intermediate product of the iron industry and has a high carbon content, typically ranging from 3.5\% to 4.5\%.
- It is used to produce cast iron by remelting and shaping in molds.
- This statement is correct because pig iron can indeed be molded into various shapes when it is converted and cast.

Based on the above explanations, the correct option is: Pig iron can be moulded into a variety of shapes.

The Correct Option is D