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Which of the following options are correct for the reaction? 2[Au(CN)2]−(aq) + Zn(s) → 2Au(s) + [Zn(CN)4]2−(aq) A. Redox reaction B. Displacement reaction C. Decomposition reaction D. Combination reaction Choose the correct answer from the options given below: (1) A only (2) A and D only (3) A and B only (4) C and D only

1. A only
2. A and D only
3. A and B only
4. C and D only

Correct answer: A and B only

Solution

The reaction involves the transfer of electrons, characteristic of a redox reaction, where gold is reduced and zinc is oxidized. Additionally, it can be classified as a displacement reaction because zinc displaces gold from its complex.

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