Match List I with List II 
List I List II
A. \(\Delta H = q \) I. \(P_{ext} =0 \)
B. Free expansion II. Heat
C. Path function III. At constant pressure 
D. Reversible process IV. An infinitely slow process that proceeds through a series of equilibrium states 

Choose the correct answer from the options given below: 
1.  A-I, B-III, C-II, D-IV
2.  A-I, B-II, C-III, D-IV 
3.  A-III, B-I, C-IV, D-II
4.  A-III, B-I, C-II, D-IV

Subtopic:  Classification of System, Extensive & Intensive Properties | Cp & Cv |
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The amount of heat required to raise the temperature of a body through 1 \(^\circ C\) is called its:
1. Molar Heat 2. Specific Heat
3. Entropy 4. Heat capacity
Subtopic:  Cp & Cv |
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\(\Delta_fH^\circ\) is non-zero for which of the following species?
1. \(S_\text{monoclinic}\)
2.  \(C_\text{graphite}\)
3. H2(g)
4.  \(O_2(g)\)
Subtopic:  Thermochemistry |
 77%
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For the given reaction:
 \(2A(g) + B(g) + C(s) \rightarrow 2D(g) \) 
\(\Delta \mathrm{U}^{\circ}=-10.5 \mathrm{~kJ} \text { and } \Delta \mathrm{S}^{\circ}=-44.1 \mathrm{JK}^{-1} \)
The value of \(\Delta G^o \) for the above reaction at 25 °C will be :
1. 1.2 kJ 2. 0.16 kJ
3. 3.2 kJ 4. 1.6 kJ
Subtopic:  Gibbs Energy Change |
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Assertion (A): The increase in internal energy \((\Delta E ) \) for the vapourisation of one mole of water at 1 atm and 373 K is zero.
Reason (R): For all isothermal processes, \(\Delta E = 0 \).
 
1.  Both (A) and (R) are True and (R) is the correct explanation of (A).
2.  Both (A) and (R) are True but (R) is not the correct explanation of (A).
3.  (A) is True and (R) is False.
4.  (A) and (R) both are False.
Subtopic:  Enthalpy & Internal energy |
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Assertion (A): All combustion reactions are exothermic.
Reason (R): For an exothermic reaction, enthalpies of products are greater than enthalpies of reactants \({(\Sigma v_p\Delta_fH(P)> \Sigma v_R\Delta_fH(R))}\).
 
1.  Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.


 
Subtopic:  Thermochemistry |
 60%
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The work done when 1 mole of gas expands reversibly and isothermally from a pressure of 5 atm to 1 atm at 300 K is: ​
(Given log 5 = 0.6989 and R = 8.314 J K-1 mol-1)
1. zero J
2. 150 J
3. +4014.6 J
4. -4014.6 J

Subtopic:  First Law of Thermodynamics |
 69%
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A reaction, \(A + B \rightarrow C+D - q~ cal. \) is found to have a positive entropy change.
The reaction will be:
1. possible at high temperature. 
2. possible only at low temperatures. 
3. not possible at any temperature. 
4. possible at any temperature.
Subtopic:  Spontaneity & Entropy |
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The intensive property among the following is:

1. Volume 
2. Enthalpy 
3. Molar heat capacity 
4. Internal energy 
Subtopic:  Classification of System, Extensive & Intensive Properties |
 73%
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For which of the following equations, \(\Delta H > \Delta E \) ? 

\(1.~~\mathrm{N}_{2}(g)+3 \mathrm{H}_{2}(\mathrm{~g}) \longrightarrow 2 \mathrm{NH}_{3}(\mathrm{g})\\ \\ 2.~~\mathrm{H}_{2}(g)+\frac{1}{2} \mathrm{O}_{2}(\mathrm{~g}) \longrightarrow \mathrm{H}_{2} \mathrm{O}(\mathrm{l})\\ \\ 3.~~\mathrm{PCl}_{5}(g) \rightarrow \mathrm{PCl}_{3}(g)+\mathrm{Cl}_{2}(g)\\ 4.~~\mathrm{H}_{2}(\mathrm{~g})+\mathrm{I}_{2}(\mathrm{~g}) \rightarrow 2 \mathrm{HI}(\mathrm{g}) \)
Subtopic:  Enthalpy & Internal energy |
 79%
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