Published by:
CGP EDU Academic Team
Published on: August 14, 2026
In basic medium CN – is oxidised to CNO – by 
.
In this reaction 
is reduced to MnO 2
(i)What is the unbalanced reduction half reaction ?
Correct Answers for Comprehension Sub-Questions
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CHECK THE SOLUTION.
(i)
Sol. 
(aq) ⎯→ MnO 2 (s)
(ii)
Sol. CN – (aq) ⎯→ CNO – (aq)
(iii)
Sol. 3e – + 4 H + (aq) + 
(aq) ⎯→ MnO 2 (s) + 2H 2 O ( λ )
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