Select Chapter Topics: Which amongst the following options is the correct relation between change in enthalpy and change in internal energy ?
1. $$\Delta \mathrm{H}+\Delta \mathrm{U}=\Delta \mathrm{nR}$$
2. $$\Delta \mathrm{H}=\Delta \mathrm{U}-\Delta n_gRT$$
3. $$\Delta \mathrm{H}=\Delta \mathrm{U}+\Delta n_gRT$$
4. $$\Delta \mathrm{H} -\Delta \mathrm{U}=-\Delta n_gRT$$  Subtopic:  Enthalpy & Internal energy |
80%
From NCERT
NEET - 2023
Hints

Consider the following reaction:-

$$2H_2(g) + O_2(g) \rightarrow 2H_2O(g) \Delta_rH^\circ = -483.64 kJ.$$

What is the enthalpy change for the decomposition of one mole of water?
(Choose the right option).

1. 120.9 kJ
2. 241.82 kJ
3. 18 kJ
4. 100 kJ  Subtopic:  Thermochemistry |
86%
From NCERT
NEET - 2023
Hints

Which of the following p-V curve represents the maximum work done?

 1 2 3 4   Subtopic:  2nd & 3rd Law of Thermodynamics |
83%
From NCERT
NEET - 2022
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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 |
66%
From NCERT
NEET - 2022
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One mole of an ideal gas at 300 K is expanded isothermally from 1 L to 10 L volume. $$\Delta U$$ for this process is:
(Use R = 8.314 J K–1 mol–1)
1. 1260 J
2. 2520 J
3. 5040 J
4. 0 J  Subtopic:  First Law of Thermodynamics |
76%
From NCERT
NEET - 2022
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Which one among the following is the correct option for right relationship between Cp and CV for one mole of an ideal gas?

1. ${\mathrm{C}}_{\mathrm{P}}={\mathrm{RC}}_{\mathrm{V}}$

2. ${\mathrm{C}}_{\mathrm{V}}={\mathrm{RC}}_{\mathrm{P}}$

3. ${\mathrm{C}}_{\mathrm{P}}+{\mathrm{C}}_{\mathrm{V}}=\mathrm{R}$

4. ${C}_{\mathrm{P}}-{\mathrm{C}}_{\mathrm{V}}=\mathrm{R}$  Subtopic:  Cp & Cv |
84%
From NCERT
NEET - 2021
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For irreversible expansion of an ideal gas under isothermal condition, the correct option is :

1.

2.

3.

4.  Subtopic:  Spontaneity & Entropy |
62%
From NCERT
NEET - 2021
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Hydrolysis of sucrose is given by the following reaction

Sucrose + H2$⇌$ Glucose + Fructose

If the equilibrium constant (Kc) is 2$×$1013 at 300 K, the value of ${∆}_{r}{G}^{⊝}$ at the same temperature will be:

1. 8.314 J mol-1 K-1$×$300 K$×$ln (2$×$1013)

2. 8.314 J mol-1 K-1$×$300 K$×$ln (3$×$1013)

3. -8.314 J mol-1 K-1$×$300 K$×$ln (4$×$1013)

4. -8.314 J mol-1 K-1$×$300 K$×$ln (2$×$1013)  Subtopic:  Gibbs Energy Change |
77%
From NCERT
NEET - 2020
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For the reaction, 2Cl(g) $\to$ Cl2(g), the correct option is:

1.

2.

3.

4.  Subtopic:  Enthalpy & Internal energy | Spontaneity & Entropy |
60%
From NCERT
NEET - 2020
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1.  $q=0,$ $∆T<0$ $and$ $w>0$

2.  $q<0,$ $∆T=0$ $and$ $w=0$

3.  $q>0,$ $∆T>0$ $and$ $w>0$

4.  $q=0,$ $∆T=0$ $and$ $w=0$  Subtopic:  2nd & 3rd Law of Thermodynamics |
72%
From NCERT
NEET - 2020
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Select Chapter Topics: 