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Previous year question hub

Redox Reactions - Physical Chemistry - Chemistry Previous Year Questions

Practice Redox Reactions - Physical Chemistry - Chemistry previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

1Papers
1Years
3Questions
1Topics

Redox Reactions question pattern

Every graph below is calculated only from this selection.

Questions by year

Year-wise coverage for Redox Reactions. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Not classified 3 100%

Question type distribution

MCQ, numerical, multiple-select and other formats found in these papers.

Multiple Choices 3 100%

Subject weightage

Top subjects by unique question coverage.

Chemistry
3 Qs

Most asked topics

Top topics across the included previous year papers.

Physical Chemistry
3 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Redox Reactions
3 Qs

Paper coverage

Question coverage for the most populated papers. Every active PYP paper remains listed below.

VITEEE 2025
3 Qs

Included previous year papers

Newest papers appear first. Sort by year, question coverage or name.

PaperYear / sessionQuestions in this viewOpen
VITEEE 202520253View paper

All Redox Reactions previous year questions

Practice every matching question in batches of 20, with every available option.

1
2025 · Chemistry · Physical Chemistry · Redox Reactions
VITEEE 2025

In the following redox reaction, what will be the sum of $x, y$, and $z$ ?

$$\begin{aligned} x \mathrm{Cr}_2 \mathrm{O}_7^{2-}(a q) & +y \mathrm{SO}_3^{2-}(a q)+z \mathrm{H}^{+}(a q) \longrightarrow \mathrm{Cr}^{3+}(a q)+\mathrm{SO}_4^{2-}(a q)+\mathrm{H}_2 \mathrm{O}(l) \end{aligned}$$

A

19

B

20

C

12

D

22

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2
2025 · Chemistry · Physical Chemistry · Redox Reactions
VITEEE 2025

Ozone is quantitatively determined by bubbling it through an excess of acidic potassium iodide solution, which liberates iodine. The liberated iodine is then titrated with sodium thiosulphate solution.

If 25.0 mL of the iodine-containing solution required 20.0 mL of 0.01 M sodium thiosulphate for complete titration, calculate the number of moles of ozone that reacted.

A

$1.00 \times 10^{-4} \mathrm{~mol}$

B

$2.00 \times 10^{-4} \mathrm{~mol}$

C

$3.00 \times 10^{-4} \mathrm{~mol}$

D

$5.00 \times 10^{-4} \mathrm{~mol}$

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3
2025 · Chemistry · Physical Chemistry · Redox Reactions
VITEEE 2025

How many moles of $\mathrm{KMnO}_4$ are required to oxidise 1 mole of oxalic acid in acidic medium?

A

0.5 mol

B

0.25 mol

C

0.4 mol

D

0.1 mol

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