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MHT CET Chemistry question

ChemistryRedox ReactionsMHT CET

For the redox reaction, . In basic medium, coefficients of Zn, and in the balanced equation are respectively.

Answer: (B)

Solution

N goes from +5 to -3 (8 electrons) and Zn from 0 to +2 (2 electrons), so 4 Zn per , and balancing in base gives Missing close brace4\mathrm{Zn} + \mathrm{NO_3^-Extra close brace or missing open brace} + 7\mathrm{H_2O$} →

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Question ID VK-065852