JEE Advanced 2017 Paper 1 Offline | Thermodynamics Question 21 | Chemistry

JEE Advanced 2017 Paper 1 Offline

MCQ (More than One Correct Answer)

-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)

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 $${p_1}$$

If the expansion is carried out freely, it is simultaneously both isothermal as well as adiabatic

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

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 $${T_1}\, \ne \,{T_2}$$

JEE Advanced 2013 Paper 1 Offline

MCQ (More than One Correct Answer)

-0.75

Benzene and naphthalene form an ideal solution at room temperature. For this process, the true statement(s) is(are)

$$\Delta G$$ is positive

$$\Delta S_{system}$$ is positive

$$\Delta S_{surroundings}$$ = 0

$$\Delta H$$ = 0

IIT-JEE 2012 Paper 2 Offline

MCQ (More than One Correct Answer)

-2

The reversible expansion of an ideal gas under adiabatic and isothermal conditions is shown in the figure. Which of the following statement(s) is(are) correct?

IIT-JEE 2012 Paper 2 Offline Chemistry - Thermodynamics Question 12 English

T₁ = T₂

T₃ > T₁

w_isothermal > w_adiabatic

$$\Delta$$U_isothermal > $$\Delta$$U_adiabatic

IIT-JEE 2012 Paper 1 Offline

MCQ (More than One Correct Answer)

-2

For an ideal gas, consider only P-V work in going from an initial state X to the final state Z. The final state Z can be reached by either of the two paths shown in the figure. Which of the following choice(s) is(are) correct? (Take $$\Delta$$S as change in entropy and W as work done)

IIT-JEE 2012 Paper 1 Offline Chemistry - Thermodynamics Question 13 English

$$\Delta {S_{X \to Z}} = \Delta {S_{X \to Y}} + \Delta {S_{Y \to Z}}$$

$$\Delta {W_{X \to Z}} = \Delta {W_{X \to Y}} + \Delta {W_{Y \to Z}}$$

$${W_{X \to Y \to Z}} = {W_{X \to Y}}$$

$$\Delta {S_{X \to Y \to Z}} = \Delta {S_{X \to Y}}$$

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