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NEET Chemistry NEET PYQ-Metallurgy

  • question_answer
    Which of the following statements, about the advantage of roasting of sulphide ore before reduction is not true?       [AIPMT (S) 2007]

    A) Carbon and hydrogen are suitable reducing agents for metal sulphides

    B) The \[\Delta \]fG° of the sulphide is greater than those for CS2 andH2S

    C) The \[\Delta \]fG°  is  negative  for roasting  of sulphide ore to oxide

    D) Roasting of the sulphide to the oxide is thermodynamicaliy feasible

    Correct Answer: A

    Solution :

    [a] Carbon and hydrogen are not suitable reducing agents for metal sulphides.


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