1
JEE Main 2023 (Online) 15th April Morning Shift
+4
-1
A thermodynamic system is taken through cyclic process. The total work done in the process is :

A
$100 \mathrm{~J}$
B
Zero
C
$300 \mathrm{~J}$
D
$200 \mathrm{~J}$
2
JEE Main 2023 (Online) 15th April Morning Shift
+4
-1
A flask contains Hydrogen and Argon in the ratio $2: 1$ by mass. The temperature of the mixture is $30^{\circ} \mathrm{C}$. The ratio of average kinetic energy per molecule of the two gases ( $\mathrm{K}$ argon/K hydrogen) is :

(Given: Atomic Weight of $\mathrm{Ar}=39.9$ )
A
$\frac{39.9}{2}$
B
2
C
39.9
D
1
3
JEE Main 2023 (Online) 13th April Evening Shift
+4
-1

The initial pressure and volume of an ideal gas are P$$_0$$ and V$$_0$$. The final pressure of the gas when the gas is suddenly compressed to volume $$\frac{V_0}{4}$$ will be :

(Given $$\gamma$$ = ratio of specific heats at constant pressure and at constant volume)

A
P$$_0$$(4)$$^{\frac{1}{\gamma}}$$
B
P$$_0$$
C
4P$$_0$$
D
P$$_0$$(4)$$^{\gamma}$$
4
JEE Main 2023 (Online) 13th April Evening Shift
+4
-1

The mean free path of molecules of a certain gas at STP is $$1500 \mathrm{~d}$$, where $$\mathrm{d}$$ is the diameter of the gas molecules. While maintaining the standard pressure, the mean free path of the molecules at $$373 \mathrm{~K}$$ is approximately:

A
$$750 \mathrm{~d}$$
B
$$1500 \mathrm{~d}$$
C
$$\mathrm{2049~ d}$$
D
$$1098 \mathrm{~d}$$
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