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Q. No.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. \(O_2(g)\)
1. \(S_\text{monoclinic}\)
2. \(C_\text{graphite}\)
3. H2(g)
4. \(O_2(g)\)
Subtopic: Thermochemistry |
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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 :
\(2A(g) + B(g) + C(s) \rightarrow 2D(g) \)
\(\Delta \mathrm{U}^{\circ}=-10.5 \mathrm{~kJ} \text { and } \Delta \mathrm{S}^{\circ}=-44.1 \mathrm{JK}^{-1} \)
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 |
56%
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Match List I with List II
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
| 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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| 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 |
76%
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
| 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 |
61%
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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%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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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.
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 |
55%
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The intensive property among the following is:
1. Volume
2. Enthalpy
3. Molar heat capacity
4. Internal energy
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, \(\Delta H > \Delta E \) ?
\(1.~~\mathrm{N}_{2}(g)+3 \mathrm{H}_{2}(\mathrm{~g}) \longrightarrow 2 \mathrm{NH}_{3}(\mathrm{g})\\ \\ 2.~~\mathrm{H}_{2}(g)+\frac{1}{2} \mathrm{O}_{2}(\mathrm{~g}) \longrightarrow \mathrm{H}_{2} \mathrm{O}(\mathrm{l})\\ \\ 3.~~\mathrm{PCl}_{5}(g) \rightarrow \mathrm{PCl}_{3}(g)+\mathrm{Cl}_{2}(g)\\ 4.~~\mathrm{H}_{2}(\mathrm{~g})+\mathrm{I}_{2}(\mathrm{~g}) \rightarrow 2 \mathrm{HI}(\mathrm{g}) \)
\(1.~~\mathrm{N}_{2}(g)+3 \mathrm{H}_{2}(\mathrm{~g}) \longrightarrow 2 \mathrm{NH}_{3}(\mathrm{g})\\ \\ 2.~~\mathrm{H}_{2}(g)+\frac{1}{2} \mathrm{O}_{2}(\mathrm{~g}) \longrightarrow \mathrm{H}_{2} \mathrm{O}(\mathrm{l})\\ \\ 3.~~\mathrm{PCl}_{5}(g) \rightarrow \mathrm{PCl}_{3}(g)+\mathrm{Cl}_{2}(g)\\ 4.~~\mathrm{H}_{2}(\mathrm{~g})+\mathrm{I}_{2}(\mathrm{~g}) \rightarrow 2 \mathrm{HI}(\mathrm{g}) \)
Subtopic: Enthalpy & Internal energy |
79%
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