Question 1 :
A polyatomic gas $\left ( \gamma =\dfrac{4}{3} \right )$ is compressed to $\dfrac{1}{8}$ of its volume adiabatically. If its initial pressure is P, the new pressure will be<br>

Question 2 :
Assertion: It is not possible for a system unaided by an external agency to transfer heat from a body at lower temperature to another at a higher temperature. Reason: It is not possible to violate the 2nd law of thermodynamics.

Question 7 :
Assertion: Thermodynamic process in nature are irreversible Reason: Dissipative effects can not be eliminated .

Question 8 :
A monoatomic gas at a pressure $P$, having a volume $V$ expands isothermally to a volume $2V$ and then&#160;adiabatically to a volume $16V$. The final pressure of the gas is : (take $\gamma = 5/3$)

Question 10 :
Which of the following statements is correct for any thermodynamic system?

Question 11 :
How much heat energy should be added to the gaseous mixture consisting of $1g$ of hydrogen and $1g$ of helium to raise its temperature from $0^oC$ to $100^oC$.&#160;At constant pressure ($R = 2 \ cal/mol K$)?

Question 12 :
Two moles of an ideal monoatomic gas, initially at pressure $P_1$ and volume $V_1$ undergo an adiabatic compression until its volume is $V_2$. Then the gas is given heat Q at constant volume $V_2$. Find the total work done by the gas, the total change in its internal energy and the final temperature of the gas.[Give your answers in terms of $P_1, V_1, V_2$Q and R].

Question 13 :
Separation between the plates of a parallel plate capacitor connected to a battery (zero resistance) of constant e.m.f. is increased with constant (very slow) speed by external forces During the process W is the work done by external forces $\displaystyle \Delta U $ is the change in potential energy of the capacitor, $\displaystyle W_{b}$ is the work done by the battery and H is the heat loss in the circuit Then

Question 14 :
A sound wave passing through air at $NTP$ produces a pressure of $0.001\ dyne/cm^2$ during a compression. The corresponding change in temperature (given $\gamma = 1.5$ and assume gas to be ideal) is&#160;

Question 15 :
Assertion: Straight line on $P-T$ graph for an ideal gas represents isochoric process. Reason: If $P \propto T$ , $V = constant.$