1
JEE Advanced 2019 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-1
Which of the following statement(s) is(are) correct regarding the root mean square speed (Urms) and average translational kinetic energy (Eav) of a molecule in a gas at equilibrium?
A
Urms is inversely proportional to the square root of its molecular mass.
B
Urms is doubled when its temperature is increased four times.
C
Eavg is doubled when its temperature is increased four times.
D
Eavg at a given temperature does not depend on its molecular mass.
2
JEE Advanced 2018 Paper 2 Offline
MCQ (More than One Correct Answer)
+3
-0.75
For a reaction, $$A\,\,\rightleftharpoons\,\,P,$$ the plots of $$\left[ A \right]$$ and $$\left[ P \right]$$ with time at temperature $${T_1}$$ and $${T_2}$$ are given below.

If $${T_2} > {T_1},$$ the correct statement(s) is (are) (Assume $$\Delta {H^ \circ }$$ and $$\Delta {S^ \circ }$$ are independent of temperature and ratio of $$lnK$$ at $${T_1}$$ to $$lnK$$ at $${T_2}$$ is greater than $${{{T_2}} \over {{T_1}}}.$$ Here $$H,$$ $$S,G$$ and $$K$$ are enthalpy, entropy, Gibbs energy and equilibrium constant, respectively.)
A
$$\Delta {H^ \circ } < 0,\Delta {S^ \circ } < O$$
B
$$\Delta {G^ \circ } < 0,\Delta {H^ \circ } > 0$$
C
$$\Delta {G^ \circ } < 0,\Delta {S^ \circ } < 0$$
D
$$\Delta {G^ \circ } < 0,\Delta {S^ \circ } > 0$$
3
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 $$\Delta {H_{CA}} > \Delta {U_{CA}}$$
4
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
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