Which of the following is not an example of redox reaction?
(i) CuO + H_{2}\rightarrow Cu + H_2O
(ii) Fe_2O_3 + 3CO \rightarrow 2Fe + 3CO_{2}
(iii) 2K + F_{2} \rightarrow 2KF
(iv) BaCl_{2} + H_{2}SO_{4} \rightarrow BaSO_{4} + 2HCl

Answers (1)

The answer is the option (iv) BaCl_{2} + H_{2}SO_{4} \rightarrow BaSO_{4} + 2HCl

Explanation: The correct answer is the option (iv) because only its oxidation no. changes while that of all elements remains unchanged.

 

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