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KVPY2017ChemistryRedox Reactions

Which of the following is NOT an oxidationreduction reaction?

Options

  1. AH ₂+ Br ₂ 2 HBr
  2. BNaCl + AgNO ₃ NaNO ₃+ AgCl
  3. C2 Na ₂ ~S ₂ O ₃+ I ₂ Na ₂ ~S ₄ O ₆+2 NaI
  4. DCl ₂+ H ₂ O HCl + HOCl

Correct answer

B. NaCl + AgNO ₃ NaNO ₃+ AgCl

Step-by-step solution

NaCl + AgNO ₃ NaNO ₃+ AgCl is not a oxidation-reduction reaction because there is no change in oxidation state of any element.

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