List of top Chemistry Questions on Balancing a redox reaction asked in MHT CET

In the reaction: \[ \text{Zn} + \text{CuSO}_4 \rightarrow \text{ZnSO}_4 + \text{Cu} \] Which substance is oxidized?

Calculate the number of moles of electrons required to convert \(1.1 \text{ mol } \text{Cr}_2\text{O}_7^{2-}\) to \(\text{Cr}^{3+}\) in acidic medium.

What is the value of 'x' in order to balance the following redox reaction by ion electron method?
$$ x\text{H}_2\text{O}_2 + \text{ClO}_4^- \rightarrow x\text{O}_2 + \text{ClO}_2^- + 2\text{H}_2\text{O} $$

Identify reductant in following reaction: $\text{C}_2\text{O}_4^{2-} + \text{MnO}_4^- + \text{H}^+ \longrightarrow \text{Mn}^{2+} + \text{CO}_2 + \text{H}_2\text{O}$

What is the number of moles of electrons gained by one mole of oxidizing agent in the following redox reaction?
$Zn_{(s)} + 2HCl_{(aq)} \longrightarrow ZnCl_2 + H_2$