Redox Reaction PYQs - Last 5 Years
WB JEE / Chemistry / Physical Chemistry / 7 recent questions
ChemistryPhysical Chemistry2022-2026
Practice 7 WB JEE Chemistry questions from Redox Reaction. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.
7
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Chemistry / Physical Chemistry
2022-2026
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7
Last 5 Years
2022-2026
7
Last 10 Years
2017-2026
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7PYQs
MCQ100%
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#1 Unknown7
7 in last 5 years7 in last 10 years
Last 5 Years Redox Reaction Questions
Showing 7 of 7 filtered questions.
1Redox Reaction
A $5.0 \mathrm{~cm}^3$ solution of $\mathrm{H}_2 \mathrm{O}_2$ liberates 1.27 g of iodine from an acidified KI solution. The percentage strength of $\mathrm{H}_2 \mathrm{O}_2$ is close to
MCQ+2 / -0.52026
2Redox Reaction
A compound $(\mathrm{X})$ when treated with $\mathrm{CuSO}_4$ solution yields a brown precipitate．On adding hypo solution the precipitate turns white．The compound $(\mathrm{X})$ is
MCQ+1 / -0.252026
3Redox Reaction
What is the four-electron reduced form of $\mathrm{O}_2$ ?
MCQ+1 / -0.252025
4Redox Reaction
How many electrons are needed to reduce $\mathrm{N}_2$ to $\mathrm{NH}_3 ?$
MCQ+1 / -0.252025
5Redox Reaction
The equivalent weight of \(\mathrm{Na}_2 \mathrm{S}_2 \mathrm{O}_3(\mathrm{Gram}\) molecular weight \(=\mathrm{M})\) in the given reaction is
$$\mathrm{I}_2+2 \mathrm{Na}_2 \mathrm{~S}_2 \mathrm{O}_3=2 \mathrm{NaI}+\mathrm{Na}_2 \mathrm{~S}...
$$\mathrm{I}_2+2 \mathrm{Na}_2 \mathrm{~S}_2 \mathrm{O}_3=2 \mathrm{NaI}+\mathrm{Na}_2 \mathrm{~S}...
MCQ+1 / -0.252024
6Redox Reaction
The equivalent weight of KIO\(_3\) in the given reaction is (M = molecular mass):
\(\mathrm{2Cr{(OH)_3} + 4O{H^ - } + KI{O_3} \to 2CrO_4^{2 - } + 5{H_2}O + KI}\)
\(\mathrm{2Cr{(OH)_3} + 4O{H^ - } + KI{O_3} \to 2CrO_4^{2 - } + 5{H_2}O + KI}\)
MCQ+1 / -0.252023
7Redox Reaction
Oxidation states of Cr in K2Cr2O7 and CrO5 are respectively
MCQ+1 / -0.252022