Answer
Verified
379.2k+ views
Hint: The different forms of iron have a different amount of carbon content. Impure form of iron means we have to find the form of iron which has a minimum content of iron and high amount of impurities. The form having high carbon content will be the impure form of the iron.
Complete answer:
Iron is extracted from its ore in the form of different alloys such as pig, wrought, cast and steel. The iron separated at a different level of the iron extraction process has a different composition. All the alloys of iron mainly differ based on carbon content.
The pig iron contains almost $3 - 4\,\% $ carbon and some impurities such as sulphur.
The cast iron contains almost $2 - 3\,\% $ carbon.
The wrought iron contains the lowest, almost $0.08\,\% $ carbon.
Steel contains almost $98 - 99\,\% $ iron and the rest is carbon.
The steel and wrought iron contain the lowest amount of carbon so, they are not impure form.The pig iron contains the high amount of carbon so, it is the impure form of iron. It separated at the initial level of extraction. The pig iron is known as the cheapest form of iron that contains the highest amount of impurities.
Hence, the correct answer is option (C), the most impure form of Iron is “Pig iron”.
Note: Ore of the iron are magnetite, hematite, limonite, and siderite. The ore having a high amount of iron are magnetite and hematite, so these are commercially important. The purest form of the iron is the form that has the highest amount of iron and the lowest amount of carbon. As the number of processes and steps increases in the extraction method, the impurities remove and purity increase. The pig iron is known as the cheapest form of iron that contains the highest amount of impurities. Wrought iron is the purest form of iron.
Complete answer:
Iron is extracted from its ore in the form of different alloys such as pig, wrought, cast and steel. The iron separated at a different level of the iron extraction process has a different composition. All the alloys of iron mainly differ based on carbon content.
The pig iron contains almost $3 - 4\,\% $ carbon and some impurities such as sulphur.
The cast iron contains almost $2 - 3\,\% $ carbon.
The wrought iron contains the lowest, almost $0.08\,\% $ carbon.
Steel contains almost $98 - 99\,\% $ iron and the rest is carbon.
The steel and wrought iron contain the lowest amount of carbon so, they are not impure form.The pig iron contains the high amount of carbon so, it is the impure form of iron. It separated at the initial level of extraction. The pig iron is known as the cheapest form of iron that contains the highest amount of impurities.
Hence, the correct answer is option (C), the most impure form of Iron is “Pig iron”.
Note: Ore of the iron are magnetite, hematite, limonite, and siderite. The ore having a high amount of iron are magnetite and hematite, so these are commercially important. The purest form of the iron is the form that has the highest amount of iron and the lowest amount of carbon. As the number of processes and steps increases in the extraction method, the impurities remove and purity increase. The pig iron is known as the cheapest form of iron that contains the highest amount of impurities. Wrought iron is the purest form of iron.
Recently Updated Pages
Which of the following is the correct formula of Gypsum class 10 chemistry CBSE
Biogas is a mixture of A Methane + CO 2 B Methane + class 10 chemistry CBSE
Graphite is a good conductor of electricity due to class 10 chemistry CBSE
What is the number of valence electrons in the Clion class 10 chemistry CBSE
Which oxidation state for nitrogen is correctly given class 10 chemistry CBSE
Why do we store silver chloride in dark colored bo class 10 chemistry CBSE
Trending doubts
Difference Between Plant Cell and Animal Cell
Give 10 examples for herbs , shrubs , climbers , creepers
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Name 10 Living and Non living things class 9 biology CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Fill the blanks with proper collective nouns 1 A of class 10 english CBSE
Select the word that is correctly spelled a Twelveth class 10 english CBSE
Write the 6 fundamental rights of India and explain in detail