1
JEE Advanced 2018 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-1
A reversible cyclic process for an ideal gas is shown below. Here, $$P, V,$$ and $$T$$ are pressure, volume and temperature, respectively. The thermodynamic parameters $$q,w, H$$ and $$U$$ are heat, work, enthalpy and internal energy, respectively. The correct option(s) is (are)
A
$${q_{Ac}} = \Delta {U_{BC}}\,\,$$ and $${w_{AB}} = {P_2}\left( {{V_2} - {V_1}} \right)$$
B
$${w_{BC}} = {P_2}\left( {{V_2} - {V_1}} \right)\,\,$$ and $${q_{BC}} = \Delta {H_{AC}}$$
C
$$\Delta {H_{CA}} < \Delta {U_{CA}}\,\,$$ and $$\,\,{q_{AC}} = \Delta {U_{BC}}$$
D
$$\,\,{q_{BC}} = \Delta {H_{AC}}\,\,$$ and $$\Delta {H_{CA}} > \Delta {U_{CA}}$$
2
JEE Advanced 2017 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-1
For a reaction taking place in a container in equilibrium with its surroundings, the effect of temperature on its equilibrium constant $$K$$ in terms of change in entropy is described by
A
With increase in temperature, the value of $$K$$ for exothermic reaction decreases because the entropy change of the system is positive
B
With increase in temperature, the value of $$K.$$ for endothermic reaction increases because unfavorable change in entropy of the surroundings decreases
C
With increase in temperature, the value of $$K$$ for endothermic reaction increases because the entropy change of the system is negative
D
with increase in temperature, the value of $$K$$ for exothermic reaction decreases because favorable change in entropy of the surroundings decreases
3
JEE Advanced 2017 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-1
An ideal gas is expanded from $$\left( {{p_1},{V_1},{T_1}} \right)$$ to $$\left( {{p_2},{V_2},{T_2}} \right)$$ under different conditions. The correct statement(s) among the following is (are)
A
The work done on the gas is maximum when it is compressed irreversibly from $$\left( {{p_2},{V_2}} \right)$$ to $$\left( {{p_1},{V_1}} \right)$$ against constant pressure $${p_1}$$
B
If the expansion is carried out freely, it is simultaneously both isothermal as well as adiabatic
C
The work done by the gas is less when it is expanded reversibly from $${V_1}$$ to $${V_2}$$ under adiabatic conditions as compared to that when expanded reverseibly from $${V_1}$$ to $${V_2}$$ under isothermal conditions
D
The change in internal energy of the gas is (i) zero, if it is expanded reversibly with $${T_1} = {T_2}$$ , and (ii) positive, if it is expanded reversibly under adiabatic conditions with $${T_1}\, \ne \,{T_2}$$
4
JEE Advanced 2013 Paper 1 Offline
MCQ (More than One Correct Answer)
+3
-0.75
Benzene and naphthalene form an ideal solution at room temperature. For this process, the true statement(s) is(are)
A
$$\Delta G$$ is positive
B
$$\Delta S_{system}$$ is positive
C
$$\Delta S_{surroundings}$$ = 0
D
$$\Delta H$$ = 0
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