JEE Main & Advanced Chemistry Redox Reactions / रेडॉक्स अभिक्रियाएँ Question Bank Redox reaction and Method for balancing redox reaction

  • question_answer
    Which of the following reactions involves oxidation-reduction [NCERT 1972; AFMC 2000; Pb. CET 2004; CPMT 2004]

    A)                 \[NaBr+HCl\,\to \,NaCl+HBr\]

    B)                 \[HBr+AgN{{O}_{3}}\,\to \,AgBr+HN{{O}_{3}}\]

    C)                 \[{{H}_{2}}+B{{r}_{2}}\,\to \,2HBr\]

    D)                 \[2NaOH+{{H}_{2}}S{{O}_{4}}\,\to \,N{{a}_{2}}S{{O}_{4}}+2{{H}_{2}}O\]

    Correct Answer: C

    Solution :

     \[\overset{0}{\mathop{{{H}_{2}}}}\,+\overset{0}{\mathop{B{{r}_{2}}}}\,\to 2\overset{\,\,\,\,+}{\mathop{H}}\,-\overset{\,\,\,\,\,-}{\mathop{Br}}\,\]


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