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Which of the following is the most preferred reagent system for reducing nitro compounds?

1. Pd/H2 in ethanol
2. Sn with HCl
3. finely divided Ni
4. iron scrap with HCl

Correct answer: Sn with HCl

Solution

Sn with HCl is effective for reducing nitro compounds due to the strong reducing environment created by the combination of tin and hydrochloric acid, which facilitates the conversion of nitro groups to amines.

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