Difficulty distribution
How the classified questions are distributed by difficulty.
3questions
Medium
3
100%
Physical Chemistry - Chemistry Previous Year Questions
Practice Physical Chemistry - Chemistry previous year questions organised from real papers, with year-wise coverage and clear topic navigation.
3Papers
2Years
3Questions
1Topics
Physical Chemistry question pattern
Every graph below is calculated only from this selection.
Questions by year
Year-wise coverage for Physical Chemistry. Each bar uses a separate theme-derived color.
Question type distribution
MCQ, numerical, multiple-select and other formats found in these papers.
3questions
Multiple Choices
2
66.7%
Numerical Answer Type (NAT)
1
33.3%
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.
Included previous year papers
Newest papers appear first. Sort by year, question coverage or name.
| Paper | Year / session | Questions in this view | Open |
|---|---|---|---|
| JEE MAIN 2026 ONLINE 22ND JANUARY MORNING SHIFT | 2026 | 1 | View paper |
| JEE MAIN 2026 ONLINE 24TH JANUARY MORNING SHIFT | 2026 | 1 | View paper |
| JEE MAIN 2020 ONLINE 4TH SEPTEMBER EVENING SLOT | 2020 | 1 | View paper |
Sample previous year questions
A varied preview from the papers represented in this selection, with every available option.
2020 · Chemistry · Physical Chemistry · Chemical Kinetics And Nuclear Chemistry
JEE MAIN 2020 ONLINE 4TH SEPTEMBER EVENING SLOT
The number of molecules with energy greater
than the threshold energy for a reaction
increases five fold by a rise of temperature
from 27oC to 42oC. Its energy of activation in
J/mol is _____.
(Take ln 5 = 1.6094; R = 8.314 J mol–1 K–1)
(Take ln 5 = 1.6094; R = 8.314 J mol–1 K–1)
Enter a numerical response
Open complete paper
2026 · Chemistry · Physical Chemistry · Thermodynamics
JEE MAIN 2026 ONLINE 22ND JANUARY MORNING SHIFT
$$\text { Match the LIST-I with LIST-II }$$
| List-I Thermodynamic Process | List-II Magnitude in kJ | ||
| A. | Work done in reversible, isothermal expansion of 2 mol of ideal gas from \(2 \mathrm{dm} 3^{}\)\(2 \mathrm{dm} 3^{}\)2dm^(3) to \(20 \mathrm{dm} 3^{}\)\(20 \mathrm{dm} 3^{}\)20dm^(3) at 300 K . | I. | 4 |
| B. | Work done in irreversible isothermal expansion of 1 mol ideal gas from \(1 \, \mathrm{m} 3^{}\)\(1 \, \mathrm{m} 3^{}\)1m^(3) to \(3 \, \mathrm{m} 3^{}\)\(3 \, \mathrm{m} 3^{}\)3m^(3) at 300 K against a constant pressure of 3 kPa . | II. | 11.5 |
| C. | Change in internal energy for adiabatic expansion of a 1 mol ideal gas with change of temperature \(= 320 \, \mathrm{K}\)\(= 320 \, \mathrm{K}\)=320K and \(\overline{\mathrm{C}} \mathrm{V}_{} = \frac{3 2}{} \mathrm{R}\)\(\overline{\mathrm{C}} \mathrm{V}_{} = \frac{3 2}{} \mathrm{R}\)bar(C)_(V)=(3)/(2)R. | III. | 6 |
| D. | Change in enthalpy at constant pressure of 1 mol ideal gas with change of temperature \(= 337 \, \mathrm{K}\)\(= 337 \, \mathrm{K}\)=337K and \(\overline{\mathrm{C}} \mathrm{p}_{} = \frac{5 2}{} \mathrm{R}\)\(\overline{\mathrm{C}} \mathrm{p}_{} = \frac{5 2}{} \mathrm{R}\)bar(C)_(p)=(5)/(2)R. | IV. | 7 |
2026 · Chemistry · Physical Chemistry · Thermodynamics
JEE MAIN 2026 ONLINE 24TH JANUARY MORNING SHIFT
$$\text { Match the LIST-I with LIST-II }$$
| List-I Isothermal process for ideal gas system | List-II Work done ( \(V f_{} > V i_{}\)\(V f_{} > V i_{}\)V_(f) > V_(i) ) | ||
| A. | Reversible expansion | I. | \(\mathrm{w} = 0\)\(\mathrm{w} = 0\)w=0 |
| B. | Free expansion | II. | \(\mathrm{w} = - \mathrm{nR} T \mathrm{ln} \frac{\, \mathrm{V}_{\mathrm{f}} \mathrm{V}_{\mathrm{i}}}{}\)\(\mathrm{w} = - \mathrm{nR} T \mathrm{ln} \frac{\, \mathrm{V}_{\mathrm{f}} \mathrm{V}_{\mathrm{i}}}{}\)w=-nRT ln((V_(f))/(V_(i))) |
| C. | Irreversible expansion | III. | \(\mathrm{w} = - \mathrm{p} \mathrm{ex}_{} ( \mathrm{V}_{\mathrm{f}} - \mathrm{V}_{\mathrm{i}} )\)\(\mathrm{w} = - \mathrm{p} \mathrm{ex}_{} \left(\mathrm{V}_{\mathrm{f}} - \mathrm{V}_{\mathrm{i}}\right)\)w=-p_(ex)(V_(f)-V_(i)) |
| D. | Irreversible compression | IV. | \(\mathrm{w} = - \mathrm{p} \mathrm{ex}_{} ( \mathrm{V}_{\mathrm{i}} - \mathrm{V}_{\mathrm{f}} )\)\(\mathrm{w} = - \mathrm{p} \mathrm{ex}_{} \left(\mathrm{V}_{\mathrm{i}} - \mathrm{V}_{\mathrm{f}}\right)\)w=-p_(ex)(V_(i)-V_(f)) |
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