1
JEE Main 2025 (Online) 2nd April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Identify the characteristics of an adiabatic process in a monoatomic gas. (A) Internal energy is constant. (B) Work done in the process is equal to the change in internal energy. (C) The product of temperature and volume is a constant. (D) The product of pressure and volume is a constant. (E) The work done to change the temperature from $\mathrm{T}_1$ to $\mathrm{T}_2$ is proportional to $\left(\mathrm{T}_2-\mathrm{T}_1\right)$. Choose the correct answer from the options given below :
A
(B), (D) only
B
(B), (E) only
C
(A), (C), (E) only
D
(A), (C), (D) only
2
JEE Main 2025 (Online) 2nd April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

In an adiabatic process, which of the following statements is true?

A
The internal energy of the gas decreases as the temperature increases
B
The molar heat capacity is zero
C
Work done by the gas equals the increase in internal energy
D
The molar heat capacity is infinite
3
JEE Main 2025 (Online) 2nd April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The equation for real gas is given by $\left(\mathrm{P}+\frac{\mathrm{a}}{\mathrm{V}^2}\right)(\mathrm{V}-\mathrm{b})=\mathrm{RT}$, where $\mathrm{P}, \mathrm{V}, \mathrm{T}$ and R are the pressure, volume, temperature and gas constant, respectively. The dimension of $\mathrm{ab}^{-2}$ is equivalent to that of :

A
Compressibility
B
Planck's constant
C
Energy density
D
Strain
4
JEE Main 2025 (Online) 29th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The difference of temperature in a material can convert heat energy into electrical energy. To harvest the heat energy, the material should have

A

low thermal conductivity and high electrical conductivity

B

low thermal conductivity and low electrical conductivity

C

high thermal conductivity and high electrical conductivity

D

high thermal conductivity and low electrical conductivity

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