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Which of the following is not an example of redox reaction?

(i) CuO + H2 → Cu + H2O

(ii) Fe2O3 + 3CO → 2Fe + 3CO2

(iii) 2K + F2 → 2KF

(iv) BaCl2 + H2 SO4 → BaSO4 + 2HCl

0 2 Views | Posted 4 months ago
Asked by Shiksha User

  • 1 Answer

  • A

    Answered by

    alok kumar singh | Contributor-Level 10

    4 months ago

    This is a Multiple Choice Questions as classified in NCERT Exemplar

    option (iv) is the correct answer.

    Redox reaction is defined as the simultaneous oxidation and reduction of reacting species. Thus, change in oxidation state will decide whether a reaction is redox or not. Thus, assigning the oxidation states as:

    (i) CuO + H2→ Cu + H2O

     Here, oxidation of H and reduction of Cu is taking place.

    (ii) Fe2O3 + 3CO→ 2Fe + 3CO2

    Here, oxidation of C and reduction of Fe is taking place.

    (iii) 2K + F2→2KF

    Here, the oxidation of K and reduction of F is taking place.

    (iv) BaCl2 

    ...more

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