A) Bauxite
B) Malachite
C) Zinc blende
D) Pig iron
Correct Answer: D
Solution :
Pig iron \[\to \] It is the most impure form of iron and contains highest proportion of carbon\[\left( 2.5-4 \right)\,%\]. \[Malachite\to \text{ }Cu{{\left( OH \right)}_{2}}.CuC{{O}_{3}}\] \[Zinc\text{ }blende\text{ }\to \text{ }ZnS\] \[Bauxite\,\,\to \,\,A{{l}_{2}}{{O}_{3}}\,.\,\,2{{H}_{2}}O\]
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