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Previous year question hub

Thermodynamics - Physical Chemistry - Chemistry Previous Year Questions

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

8Papers
7Years
16Questions
1Topics

Thermodynamics question pattern

Every graph below is calculated only from this selection.

Questions by year

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

Difficulty distribution

How the classified questions are distributed by difficulty.

Not classified 16 100%

Question type distribution

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

Multiple Choices 16 100%

Subject weightage

Top subjects by unique question coverage.

Chemistry
16 Qs

Most asked topics

Top topics across the included previous year papers.

Physical Chemistry
16 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Thermodynamics
16 Qs

Paper coverage

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

VITEEE 2025
2 Qs
WB JEE 2025
1 Qs
WB JEE 2024
2 Qs
WB JEE 2021
1 Qs
WB JEE 2020
2 Qs
WB JEE 2019
3 Qs
WB JEE 2018
3 Qs
WB JEE 2016
2 Qs

Included previous year papers

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

PaperYear / sessionQuestions in this viewOpen
VITEEE 202520252View paper
WB JEE 202520251View paper
WB JEE 202420242View paper
WB JEE 202120211View paper
WB JEE 202020202View paper
WB JEE 201920193View paper
WB JEE 201820183View paper
WB JEE 201620162View paper

All Thermodynamics previous year questions

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

1
2016 · Chemistry · Physical Chemistry · Thermodynamics
WB JEE 2016
Which of the following plots represent an exothermic reaction?
A
WB JEE 2016 Chemistry - Thermodynamics Question 8 English Option 1
B
WB JEE 2016 Chemistry - Thermodynamics Question 8 English Option 2
C
WB JEE 2016 Chemistry - Thermodynamics Question 8 English Option 3
D
WB JEE 2016 Chemistry - Thermodynamics Question 8 English Option 4
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2
2016 · Chemistry · Physical Chemistry · Thermodynamics
WB JEE 2016
The condition for a reaction to occur spontaneously is
A
\(\Delta\)H must be negative
B
\(\Delta\)S must be negative
C
(\(\Delta\)H \(-\) T\(\Delta\)S) must be negative
D
(\(\Delta\)H + T\(\Delta\)S) must be negative
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3
2018 · Chemistry · Physical Chemistry · Thermodynamics
WB JEE 2018
Among the following, the extensive variables are
A
H (Enthalpy)
B
p (Pressure)
C
E (Internal energy)
D
V (Volume)
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4
2018 · Chemistry · Physical Chemistry · Thermodynamics
WB JEE 2018
The heat of neutralisation of a strong base and a strong acid is 13.7 kcal. The heat released when 0.6 mole HCl solution is added to 0.25 mole of NaOH is
A
3.425 kcal
B
8.22 kcal
C
11.645 kcal
D
13.7 kcal
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5
2018 · Chemistry · Physical Chemistry · Thermodynamics
WB JEE 2018
During a reversible adiabatic process, the pressure of a gas is found to be proportional to the cube of its absolute temperature. The ratio \({{{C_p}} \over {{C_v}}}\) for the gas is
A
\({3 \over 2}\)
B
\({7 \over 2}\)
C
\({5 \over 3}\)
D
\({9 \over 7}\)
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6
2019 · Chemistry · Physical Chemistry · Thermodynamics
WB JEE 2019
At constant pressure, the heat of formation of a compound is not dependent on temperature, when
A
\(\Delta {C_P}\) = 0
B
\(\Delta {C_v}\) = 0
C
\(\Delta {C_P}\) > 0
D
\(\Delta {C_P}\) < 0
Open complete paper
7
2019 · Chemistry · Physical Chemistry · Thermodynamics
WB JEE 2019
For the equilibrium, H2O(l) \(\rightleftharpoons\) H2O(v), which of the following is correct?
A
\(\Delta\)G = 0, \(\Delta\)H < 0, \(\Delta\)S < 0
B
\(\Delta\)G < 0, \(\Delta\)H > 0, \(\Delta\)S > 0
C
\(\Delta\)G > 0, \(\Delta\)H = 0, \(\Delta\)S > 0
D
\(\Delta\)G = 0, \(\Delta\)H > 0, \(\Delta\)S > 0
Open complete paper
8
2019 · Chemistry · Physical Chemistry · Thermodynamics
WB JEE 2019
The quantity hv/KB corresponds to
A
wavelength
B
velocity
C
temperature
D
angular momentum
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9
2020 · Chemistry · Physical Chemistry · Thermodynamics
WB JEE 2020
For spontaneous polymerisation, which of the following is (are) correct?
A
\(\Delta\)G is negative
B
\(\Delta\)H is negative
C
\(\Delta\)S is positive
D
\(\Delta\)S is negative
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10
2020 · Chemistry · Physical Chemistry · Thermodynamics
WB JEE 2020
An ideal gas expands adiabatically against vacuum. Which of the following is correct for the given process?
A
\(\Delta\)S = 0
B
\(\Delta\)T = \(-\)ve
C
\(\Delta\)U = 0
D
\(\Delta\)P = 0
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11
2021 · Chemistry · Physical Chemistry · Thermodynamics
WB JEE 2021
For a spontaneous reaction at all temperatures which of the following is correct?
A
Both \(\Delta\)H and \(\Delta\)S are positive
B
\(\Delta\)H is positive and \(\Delta\)S is negative
C
\(\Delta\)H is negative and \(\Delta\)S is positive
D
Both \(\Delta\)H and \(\Delta\)S are negative
Open complete paper
12
2024 · Chemistry · Physical Chemistry · Thermodynamics
WB JEE 2024

For a spontaneous process, the incorrect statement is

A
\(\left(\Delta \mathrm{G}_{\text {system }}\right)_{\mathrm{T}, \mathrm{P}}>0\)
B
\(\left(\Delta \mathrm{S}_{\text {system }}\right)+\left(\Delta \mathrm{S}_{\text {surroundings }}\right)>0\)
C
\(\left(\Delta \mathrm{G}_{\text {system }}\right)_{\mathrm{T}, \mathrm{P}}<0\)
D
\(\left(\Delta U_{\text {system }}\right)_{S, v}<0\)
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13
2024 · Chemistry · Physical Chemistry · Thermodynamics
WB JEE 2024

Which of the following statements is correct for a spontaneous polymerization reaction ?

A
\(\mathrm{\Delta G<0, \Delta H<0, \Delta S<0}\)
B
\(\Delta \mathrm{G}<0, \Delta \mathrm{H}>0, \Delta \mathrm{S}>0\)
C
\(\mathrm{\Delta G>0, \Delta H<0, \Delta S>0}\)
D
\(\Delta \mathrm{G}>0, \Delta \mathrm{H}>0, \Delta \mathrm{S}>0\)
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14
2025 · Chemistry · Physical Chemistry · Thermodynamics
WB JEE 2025

$X$ is an extensive property and $x$ is an intensive property of a thermodynamic system. Which of the following statement(s) is (are) correct?

A
$x \mathrm{X}$ is extensive.
B
$\frac{x}{X}$ is intensive.
C
$\frac{X}{x}$ is extensive.
D
$\frac{\mathrm{dX}}{\mathrm{dx}}$ is intensive.
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15
2025 · Chemistry · Physical Chemistry · Thermodynamics
VITEEE 2025

Under isothermal condition, a gas at 300 K expands from 0.1 L to 0.25 L against a constant external pressure of 2 bar. The work done by the gas is (Given that, 1 L bar $=100 \mathrm{~J}$ )

A

-30 J

B

-5 J

C

-30 kJ

D

-5 kJ

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16
2025 · Chemistry · Physical Chemistry · Thermodynamics
VITEEE 2025

Given, $\Delta G^{\circ}=-502 \mathrm{~kJ} \mathrm{~mol}^{-1}$ for the dissociation of ,

$\mathrm{Mg}(\mathrm{OH})_2(s) \rightleftharpoons \mathrm{Mg}^{2+}(a q)+2 \mathrm{OH}^{-}(a q)$ at 298 K . Find the $K_{\mathrm{sp}}$ value.

$(R=8314 \mathrm{~J} / \mathrm{mol} \cdot \mathrm{K})$

A

$1.2 \times 10^{-9}$

B

$7.9 \times 10^{-8}$

C

$4.1 \times 10^{-10}$

D

$2.6 \times 10^{-7}$

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