JEE Main & Advanced Chemistry The d-and f-Block Elements / d तथा f ब्लॉक के तत्व Question Bank Critical Thinking

  • question_answer
    Which transition metal reduces steam to evolve hydrogen [MP PMT 2003; DCE 2002]

    A) Mg

    B) Fe

    C) Sc

    D) Pt

    Correct Answer: B

    Solution :

    Iron decomposes steam into hydrogen when it is passed over red hot iron \[2Fe+3{{H}_{2}}O\to F{{e}_{2}}{{O}_{3}}+3{{H}_{2}}\uparrow \]


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