Thermodynamics is an important topic in the Chemistry section in VITEEE exam. Practising this topic will increase your score overall and make your conceptual grip on VITEEE exam stronger.
This article gives you a full set of VITEEE PYQs for Thermodynamics with explanations for effective preparation. Practice of VITEEE Chemistry PYQs including Thermodynamics questions regularly will improve accuracy, speed, and confidence in the VITEEE 2026 exam.
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VITEEE PYQs for Thermodynamics with Solutions
1.
When ideal gas expands in vacuum, the work done by the gas is equal to- PV
- RT
- 0
- nRT
2.
The standard free energy change of a reaction is $\Delta G^{\circ}$ = - $115\,kJ$ at $298 \,K$. Calculate the equilibrium constant $k_p$ in $\log k_p$ $ (R = 8.314 \,Jk^{-1} mol^{-1}).$- 20.16
- 2.303
- 2.016
- 13.83
3.
If \( \mathbf{A} = 4\hat{i} + 3\hat{j} \) and \( \mathbf{B} = 3\hat{i} + 4\hat{j} \), then the cosine of the angle between \( \vec{A} \) and \( \vec{A} + \vec{B} \) is:- \( \frac{9\sqrt{2}}{5} \)
- \( \frac{7}{5\sqrt{2}} \)
- \( \frac{5\sqrt{2}}{49} \)
- \( \frac{5\sqrt{2}}{28} \)
4.
The equivalent conductivity of a solution containing $2.54\, g$ of $CuSO _{4}$ per $L$ is $91.0\, W ^{-1} cm ^{2} eq ^{-1}$. Its conductivity would be- $2.9 \times 10^{-3} \, \Omega^{-1} \, cm^{-1} $
- $1.8 \times 10^{-2} \, \Omega^{-1} \, cm^{-1} $
- $2.4 \times 10^{-4} \, \Omega^{-1} \, cm^{-1} $
- $3.6 \times 10^{-3} \, \Omega^{-1} \, cm^{-1} $
5.
When $1 \,$ mole of $CO_{2(g)}$ occupying volume $10\,L$ at $27^{\circ}C$ is expanded under adiabatic condition, temperature falls to $150\, K$. Hence, final volume is- $5 \,L$
- $20 \,L$
- $40\, L$
- $80\, L$
6.
The standard molar heat of formation of ethane, $CO_2$ and water are respectively $-21.1, -94.1$ and $-68.3\, kcal$. The standard molar heat of combustion of ethane will be- -372 kcal
- 162 kcal
- -240 kcal
- 183.5 kcal
7.
The emf of a particular voltaic cell with the cell reaction $Hg_{2}^{2+}+H_{2} {\rightleftharpoons} 2Hg+2H^{+}$ is 0.65 V. The maximum electrical work of this cell when 0.5 g of $H_{2}$ is consumed.- $-3.12\times10^{4} J$
- $-1.25\times10^{5} J$
- $25.0\times10^{6}J$
- None
8.
Oxidation number of H in NaH, CaH$_2$, and LiH, respectively is:- +1, +1, -1
- -1, +1, +1
- +1, +1, +1
- -1, -1, -1
9.
A current of 10 A exists in a wire of cross-sectional area of \( 5 \times 10^{-6} \, \text{m}^2 \) with a drift velocity of \( 2 \times 10^{-3} \, \text{m/s} \). The number of free electrons in each cubic meter of the wire is:- \( 2 \times 10^{25} \)
- \( 2 \times 10^{23} \)
- \( 625 \times 10^{25} \)
- \( 2 \times 10^{6} \)
10.
The statement that is not correct for periodic classification of elements is:- The properties of elements are periodic function of their atomic numbers.
- Non-metallic elements are less in number than metallic elements.
- For transition elements, the \(3d\)-orbitals are filled with electrons after \(3p\)-orbitals and before \(4s\)-orbitals.
- The first ionisation enthalpies of elements generally increase with increase in atomic number as we go along a period.
11.
The output \( Y \) of the following logic circuit for given inputs is:
- A · B(A + B)
- \( A \cdot B \)
- \( 0 \)
- \( A \cdot B \)
12.
6 moles of an ideal gas expand isothermally and reversibly from a volume of 1 litre to a volume of 10 litres at 27?C. What is the maximum work done?- 47 kJ
- 100 kJ
- 0
- 34.465 kJ
13.
A plot of ln K against $\frac{1}{T}$ (abscissa) is expected to be a straight line with intercept on ordinate axis equal- $\frac{\Delat S^{\circ}}{2.303 R}$
- $\frac{\Delat S^{\circ}}{R}$
- $ - \frac{\Delat S^{\circ}}{R}$
- $R \times \Delta S^{\circ} $
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