MHT CET 2026 Chemistry question

Which of the following is NOT a redox reaction?

(A)
(B)Al(OH)_3 + 3HCl \rightarrow AlCl_3 + 3H_2OCorrect
(C)
(D)Fe(s) + Cu^{2+}{}_{(aq)} \rightarrow Fe^{2+}{}_{(aq)} + Cu_{(s)}

Answer: (B)

Solution

A redox reaction involves a change in oxidation numbers. (A) Zn goes 0 to +2 and H goes +1 to 0, so it is redox. (C) Mg goes 0 to +2 and O goes 0 to -2, so it is redox. (D) Fe goes 0 to +2 and Cu

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Question ID VK-097708