Half Reaction Method — Prelims Questions

Balance the following redox reaction in acidic medium: $\text{MnO}_4^{-} + \text{C}_2\text{O}_4^{2-} \rightarrow \text{Mn}^{2+} + \text{CO}_2$. What are the stoichiometric coefficients for $\text{MnO}_4^{-}$ and $\text{H}^+$ respectively?

Which of the following statements is INCORRECT regarding the Half-Reaction Method for balancing redox reactions?

Consider the unbalanced reaction: $\text{ClO}_3^{-} + \text{I}_2 \rightarrow \text{IO}_3^{-} + \text{Cl}^{-}$ in basic medium. What is the coefficient for $\text{OH}^-$ in the balanced equation?

In the balanced half-reaction for the reduction of dichromate ion ($\text{Cr}_2\text{O}_7^{2-}$) to chromium(III) ion ($\text{Cr}^{3+}$) in acidic medium, how many electrons are involved?

When balancing a redox reaction in basic medium, after balancing oxygen with $H_2O$ and hydrogen with $H^+$ (temporarily), what is the next crucial step to ensure the equation reflects basic conditions?

In the balanced oxidation half-reaction of $\text{S}_2\text{O}_3^{2-}$ to $\text{S}_4\text{O}_6^{2-}$, how many electrons are released?

Which of the following is the correctly balanced reduction half-reaction for $\text{NO}_3^{-} \rightarrow \text{NO}$ in acidic medium?