15. Which one of the following reac...
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15. Which one of the following reactions is a redox reaction? (A) CuSO4 + 4NH, →[Cu(NH3), so, (B) Na, SO+Bacl, BaSO, +2Naci (C) SO, +H2O → H2SO3 (D) 2CuSO4 +4K] → Cuzl2 +2K, SO4 +12

JEE/Engineering Exams
Chemistry
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[ 2 C_{a}^{+2} S_{0}+4 k I^{-1} rightarrow C_{a_{2}}^{+1} I_{2}+2 k_{2} cdot frac{50_{4}}{I_{2}} ] Cis is oxidt reduced while I is oxidised. Hence it is o redorx reaction
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