JEE Main & Advanced Chemistry Metallurgy / धातुकर्म Question Bank Roasting and Calcination

  • question_answer
    In the manufacture of iron from haematite, the function of lime stone is as [CPMT 1988; MP PET 1991, 93, 95]

    A) A reducing agent

    B) Flux

    C) Slag

    D) Gangue

    Correct Answer: B

    Solution :

    \[CaC{{O}_{3}}\to CaO+C{{O}_{2}}\]; \[\underset{\text{Flux}}{\mathop{CaO}}\,\,\,+\underset{\begin{smallmatrix}  \text{Impurity}\,\text{of} \\  \,\text{haematite} \end{smallmatrix}}{\mathop{Si{{O}_{2}}}}\,\to \underset{\text{Slag}}{\mathop{CaSi{{O}_{3}}}}\,\]


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