Redox reactions is an important topic in the Chemistry section in MHT CET exam. Practising this topic will increase your score overall and make your conceptual grip on MHT CET exam stronger.
This article gives you a full set of MHT CET PYQs for Redox reactions with explanations for effective preparation. Practice of MHT CET Chemistry PYQs including Redox reactions questions regularly will improve accuracy, speed, and confidence in the MHT CET 2026 exam.
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MHT CET PYQs for Redox reactions with Solutions
1.
In the reaction: \[ \text{Zn(s)} + \text{CuSO}_4(aq) \rightarrow \text{ZnSO}_4(aq) + \text{Cu(s)} \] Which of the following is the correct oxidation half-reaction?- \( \text{Zn} \rightarrow \text{Zn}^{2+} + 2e^- \)
- \( \text{Cu}^{2+} + 2e^- \rightarrow \text{Cu} \)
- \( \text{Zn}^{2+} + 2e^- \rightarrow \text{Zn} \)
- \( \text{Cu} \rightarrow \text{Cu}^{2+} + 2e^- \)
2.
What is the oxidation number of gold in the complex ${[AuCl_4]^{1-}}$ ?- 4
- 3
- 2
- 1
3.
Identify the weakest oxidising agent among the following.- $Li^{+}$
- $Na^{+}$
- $Cd^{2+}$
- $I_2$
4.
The oxidation number of chlorine in $ \text{Cl}_2 \text{O} $ is:- \( +1 \)
- \( -1 \)
- \( 0 \)
- \( +3 \)
5.
What is the oxidation state of chromium in \( \text{K}_2\text{Cr}_2\text{O}_7 \)?- +2
- +3
- +6
- +7
6.
How many moles of electrons are required for the reduction of 1 mole of \( \mathrm{Cr^{3+}} \) to \( \mathrm{Cr^0} \) (s)?- 1 mole of \( e^- \)
- 2 moles of \( e^- \)
- 3 moles of \( e^- \)
- None of these
7.
Calculate the oxidation number of sulfur in \( \text{H}_2\text{SO}_4 \).- +4
- +6
- +2
- 0
8.
In acidic medium, which of the following does not change its colour?- \( \text{MnO}_4^- \)
- \( \text{MnO}_4^{2-} \)
- \( \text{CrO}_4^{2-} \)
- \( \text{FeO}_4^{2-} \)
9.
Which of the following given elements is the least reactive among all other elements?- (A) Ag
- (B) Hg
- (C) Au
- (D) Al
10.
In which of the compounds does 'manganese' exhibit the highest oxidation number?- \( \text{MnO}_2 \)
- \( \text{Mn}_3\text{O}_4 \)
- \( \text{K}_2\text{MnO}_4 \)
- \( \text{MnSO}_4 \)
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