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NEET Chemistry Redox Reactions / रेडॉक्स अभिक्रियाएँ Question Bank Self Evaluation Test - Redox Reactions

  • question_answer
    Which substance serves as reducing agent in the following reaction? \[14{{H}^{+}}+C{{r}_{2}}O_{7}^{2-}+3Ni\xrightarrow{{}}\]             \[2C{{r}^{3+}}+7{{H}_{2}}O+3N{{i}^{2+}}\]              

    A) \[{{H}_{2}}O\]                        

    B) Ni

    C) \[{{H}^{+}}\]                        

    D) \[C{{r}_{2}}O_{7}^{2-}\]

    Correct Answer: B

    Solution :

    [b] \[(Ni\to N{{i}^{2+}})Ni\] loses electrons hence act as reducing agent.


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