Difficulty distribution
How the classified questions are distributed by difficulty.
515questions
Not classified
515
100%
Chemistry Previous Year Questions
Practice Chemistry previous year questions organised from real papers, with year-wise coverage and clear topic navigation.
13Papers
11Years
475Questions
6Topics
Chemistry question pattern
Every graph below is calculated only from this selection.
Questions by year
Year-wise coverage for Chemistry. Each bar uses a separate theme-derived color.
Question type distribution
MCQ, numerical, multiple-select and other formats found in these papers.
515questions
Multiple Choices
515
100%
Subject weightage
Top subjects by unique question coverage.
Most asked topics
Top topics across the included previous year papers.
Subtopic coverage
Top subtopics inside this exact selection.
Paper coverage
Question coverage for the most populated papers. Every active PYP paper remains listed below.
Browse by topics
Open a focused page built from the same verified paper data.
Physical Chemistry
Explore previous-paper coverage, trends and focused practice for Physical Chemistry.
Organic Chemistry
Explore previous-paper coverage, trends and focused practice for Organic Chemistry.
Inorganic Chemistry
Explore previous-paper coverage, trends and focused practice for Inorganic Chemistry.
Physical Chemistry
Explore previous-paper coverage, trends and focused practice for Physical Chemistry.
Organic Chemistry
Explore previous-paper coverage, trends and focused practice for Organic Chemistry.
Inorganic Chemistry
Explore previous-paper coverage, trends and focused practice for Inorganic Chemistry.
Included previous year papers
Newest papers appear first. Sort by year, question coverage or name.
| Paper | Year / session | Questions in this view | Open |
|---|---|---|---|
| WB JEE 2026 | 2026 | 40 | View paper |
| WB JEE 2026 | 2026 | 40 | View paper |
| VITEEE 2025 | 2025 | 35 | View paper |
| WB JEE 2025 | 2025 | 40 | View paper |
| WB JEE 2024 | 2024 | 40 | View paper |
| WB JEE 2023 | 2023 | 40 | View paper |
| WB JEE 2022 | 2022 | 40 | View paper |
| WB JEE 2021 | 2021 | 40 | View paper |
| WB JEE 2020 | 2020 | 40 | View paper |
| WB JEE 2019 | 2019 | 40 | View paper |
| WB JEE 2018 | 2018 | 40 | View paper |
| WB JEE 2017 | 2017 | 40 | View paper |
| WB JEE 2016 | 2016 | 40 | View paper |
Sample previous year questions
A varied preview from the papers represented in this selection, with every available option.
2016 · Chemistry · Organic Chemistry · General Organic Chemistry
WB JEE 2016
The correct order of basicity of the following compounds is
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2017 · Chemistry · Physical Chemistry · Chemical Equilibrium
WB JEE 2017
Equilibrium constants for the following reactions at 1200 K are given
2H2O(g) \(\rightleftharpoons\) 2H2(g) + O2(g), K1 = 6.4 \(\times\) 10\(-\)8
2CO2(g) \(\rightleftharpoons\) 2CO(g) + O2(g), K2 = 1.6 \(\times\) 10\(-\)6
The equilibrium constant for the reaction?
H2(g) + CO2(g) \(\rightleftharpoons\) CO(g) + H2O(g) at 1200 K will be
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2H2O(g) \(\rightleftharpoons\) 2H2(g) + O2(g), K1 = 6.4 \(\times\) 10\(-\)8
2CO2(g) \(\rightleftharpoons\) 2CO(g) + O2(g), K2 = 1.6 \(\times\) 10\(-\)6
The equilibrium constant for the reaction?
H2(g) + CO2(g) \(\rightleftharpoons\) CO(g) + H2O(g) at 1200 K will be
2018 · Chemistry · Physical Chemistry · Electrochemistry
WB JEE 2018
Given the standard half-cell potentials (E\(^\circ\)) of the following as
$$\matrix{ {Zn \to Z{n^{2 + }} + 2{e^ - };} & {{E^o} = + 0.76V} \cr {Fe \to F{e^{2 + }} + 2{e^ - };} & {{E^o} = 0.41V} \cr }$$
Then the standard e.m.f. of the cell with the reaction \(F{e^{2 + }} + Zn \to Z{n^{2 + }} + Fe\) is
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$$\matrix{ {Zn \to Z{n^{2 + }} + 2{e^ - };} & {{E^o} = + 0.76V} \cr {Fe \to F{e^{2 + }} + 2{e^ - };} & {{E^o} = 0.41V} \cr }$$
Then the standard e.m.f. of the cell with the reaction \(F{e^{2 + }} + Zn \to Z{n^{2 + }} + Fe\) is
2019 · Chemistry · Physical Chemistry · Radioactivity And Nuclear Chemistry
WB JEE 2019
The half-life period of \({}_{53}{I^{125}}\) is 60 days. The radioactivity after 180 days will be
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2020 · Chemistry · Physical Chemistry · Liquid Solution
WB JEE 2020
Equal masses of ethane and hydrogen are mixed in an empty container at 298 K. The fraction of total pressure exerted by hydrogen is
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2021 · Chemistry · Physical Chemistry · Liquid Solution
WB JEE 2021
When 20 g of naphthoic acid (C11H8O2) is dissolved in 50 g of benzene, a freezing point depression of 2K is observed. The van't Hoff factor (i) is [Kf = 1.72 K kg mol\(-\)1]
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