01. First Law of Thermodynamics and Application
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Thermodynamics

272680 A sample of liquid in a thermally insulated container is stirred for $1 \mathrm{hr}$ by a mechanical attachment to a motor in the surroundings, which of the following thermodynamic quantity for the system is zero?

1 Work (W)
2 Change in internal energy $(\Delta \mathrm{E})$
3 Change in enthalpy $(\Delta \mathrm{H})$
4 None of these
AMU-2012
Thermodynamics

272681 The incorrect statement of the first law of thermodynamics is

1 $\mathrm{W}=\Delta \mathrm{E}-\mathrm{q}$
2 $q=\Delta \mathrm{E}-\mathrm{W}$
3 $\Delta \mathrm{E}=\mathrm{q}+\mathrm{W}$
4 $q=\Delta \mathrm{E}+\mathrm{W}$
AMU-2004
Thermodynamics

272682 1 g ice absorbs 335J of heat to melt at $0^{\circ} \mathrm{C}$. The entropy change will be

1 $1.2 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$
2 $335 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$
3 $22.1 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$
4 $0.8 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$
BCECE-2010
Thermodynamics

272685 Which of the following represents the first law of thermodynamics

1 $\Delta \mathrm{U}=\mathrm{q}+\mathrm{W}$
2 $\Delta \mathrm{U}=\mathrm{p} \Delta \mathrm{V}$
3 $\Delta \mathrm{U}=\Delta \mathrm{H}+\mathrm{p} \Delta \mathrm{V}$
4 $\Delta \mathrm{H}=\mathrm{q}+\mathrm{W}$
CG PET-2012
Thermodynamics

272686 In photoelectric effect, if the energy required to overcome the attractive forces on the electron, (work function) of $\mathrm{Li}, \mathrm{Na}$ and $\mathrm{Rb}$ are $2.41 \mathrm{eV}$
$2.30 \mathrm{eV}$ and $2.09 \mathrm{eV}$ respectively, the work function of ' $K$ ' could approximately be in $\mathrm{eV}$.

1 2.52
2 2.20
3 2.35
4 2.01
BCECE-2014
NEET DIGITAL LIBRARY
Thermodynamics

272680 A sample of liquid in a thermally insulated container is stirred for $1 \mathrm{hr}$ by a mechanical attachment to a motor in the surroundings, which of the following thermodynamic quantity for the system is zero?

1 Work (W)
2 Change in internal energy $(\Delta \mathrm{E})$
3 Change in enthalpy $(\Delta \mathrm{H})$
4 None of these
AMU-2012
Thermodynamics

272681 The incorrect statement of the first law of thermodynamics is

1 $\mathrm{W}=\Delta \mathrm{E}-\mathrm{q}$
2 $q=\Delta \mathrm{E}-\mathrm{W}$
3 $\Delta \mathrm{E}=\mathrm{q}+\mathrm{W}$
4 $q=\Delta \mathrm{E}+\mathrm{W}$
AMU-2004
Thermodynamics

272682 1 g ice absorbs 335J of heat to melt at $0^{\circ} \mathrm{C}$. The entropy change will be

1 $1.2 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$
2 $335 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$
3 $22.1 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$
4 $0.8 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$
BCECE-2010
Thermodynamics

272685 Which of the following represents the first law of thermodynamics

1 $\Delta \mathrm{U}=\mathrm{q}+\mathrm{W}$
2 $\Delta \mathrm{U}=\mathrm{p} \Delta \mathrm{V}$
3 $\Delta \mathrm{U}=\Delta \mathrm{H}+\mathrm{p} \Delta \mathrm{V}$
4 $\Delta \mathrm{H}=\mathrm{q}+\mathrm{W}$
CG PET-2012
Thermodynamics

272686 In photoelectric effect, if the energy required to overcome the attractive forces on the electron, (work function) of $\mathrm{Li}, \mathrm{Na}$ and $\mathrm{Rb}$ are $2.41 \mathrm{eV}$
$2.30 \mathrm{eV}$ and $2.09 \mathrm{eV}$ respectively, the work function of ' $K$ ' could approximately be in $\mathrm{eV}$.

1 2.52
2 2.20
3 2.35
4 2.01
BCECE-2014
Join With Us for More Updates
Thermodynamics

272680 A sample of liquid in a thermally insulated container is stirred for $1 \mathrm{hr}$ by a mechanical attachment to a motor in the surroundings, which of the following thermodynamic quantity for the system is zero?

1 Work (W)
2 Change in internal energy $(\Delta \mathrm{E})$
3 Change in enthalpy $(\Delta \mathrm{H})$
4 None of these
AMU-2012
Thermodynamics

272681 The incorrect statement of the first law of thermodynamics is

1 $\mathrm{W}=\Delta \mathrm{E}-\mathrm{q}$
2 $q=\Delta \mathrm{E}-\mathrm{W}$
3 $\Delta \mathrm{E}=\mathrm{q}+\mathrm{W}$
4 $q=\Delta \mathrm{E}+\mathrm{W}$
AMU-2004
Thermodynamics

272682 1 g ice absorbs 335J of heat to melt at $0^{\circ} \mathrm{C}$. The entropy change will be

1 $1.2 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$
2 $335 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$
3 $22.1 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$
4 $0.8 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$
BCECE-2010
Thermodynamics

272685 Which of the following represents the first law of thermodynamics

1 $\Delta \mathrm{U}=\mathrm{q}+\mathrm{W}$
2 $\Delta \mathrm{U}=\mathrm{p} \Delta \mathrm{V}$
3 $\Delta \mathrm{U}=\Delta \mathrm{H}+\mathrm{p} \Delta \mathrm{V}$
4 $\Delta \mathrm{H}=\mathrm{q}+\mathrm{W}$
CG PET-2012
Thermodynamics

272686 In photoelectric effect, if the energy required to overcome the attractive forces on the electron, (work function) of $\mathrm{Li}, \mathrm{Na}$ and $\mathrm{Rb}$ are $2.41 \mathrm{eV}$
$2.30 \mathrm{eV}$ and $2.09 \mathrm{eV}$ respectively, the work function of ' $K$ ' could approximately be in $\mathrm{eV}$.

1 2.52
2 2.20
3 2.35
4 2.01
BCECE-2014
For More Updates join with Us
Thermodynamics

272680 A sample of liquid in a thermally insulated container is stirred for $1 \mathrm{hr}$ by a mechanical attachment to a motor in the surroundings, which of the following thermodynamic quantity for the system is zero?

1 Work (W)
2 Change in internal energy $(\Delta \mathrm{E})$
3 Change in enthalpy $(\Delta \mathrm{H})$
4 None of these
AMU-2012
Thermodynamics

272681 The incorrect statement of the first law of thermodynamics is

1 $\mathrm{W}=\Delta \mathrm{E}-\mathrm{q}$
2 $q=\Delta \mathrm{E}-\mathrm{W}$
3 $\Delta \mathrm{E}=\mathrm{q}+\mathrm{W}$
4 $q=\Delta \mathrm{E}+\mathrm{W}$
AMU-2004
Thermodynamics

272682 1 g ice absorbs 335J of heat to melt at $0^{\circ} \mathrm{C}$. The entropy change will be

1 $1.2 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$
2 $335 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$
3 $22.1 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$
4 $0.8 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$
BCECE-2010
Thermodynamics

272685 Which of the following represents the first law of thermodynamics

1 $\Delta \mathrm{U}=\mathrm{q}+\mathrm{W}$
2 $\Delta \mathrm{U}=\mathrm{p} \Delta \mathrm{V}$
3 $\Delta \mathrm{U}=\Delta \mathrm{H}+\mathrm{p} \Delta \mathrm{V}$
4 $\Delta \mathrm{H}=\mathrm{q}+\mathrm{W}$
CG PET-2012
Thermodynamics

272686 In photoelectric effect, if the energy required to overcome the attractive forces on the electron, (work function) of $\mathrm{Li}, \mathrm{Na}$ and $\mathrm{Rb}$ are $2.41 \mathrm{eV}$
$2.30 \mathrm{eV}$ and $2.09 \mathrm{eV}$ respectively, the work function of ' $K$ ' could approximately be in $\mathrm{eV}$.

1 2.52
2 2.20
3 2.35
4 2.01
BCECE-2014
NEET DIGITAL LIBRARY
Thermodynamics

272680 A sample of liquid in a thermally insulated container is stirred for $1 \mathrm{hr}$ by a mechanical attachment to a motor in the surroundings, which of the following thermodynamic quantity for the system is zero?

1 Work (W)
2 Change in internal energy $(\Delta \mathrm{E})$
3 Change in enthalpy $(\Delta \mathrm{H})$
4 None of these
AMU-2012
Thermodynamics

272681 The incorrect statement of the first law of thermodynamics is

1 $\mathrm{W}=\Delta \mathrm{E}-\mathrm{q}$
2 $q=\Delta \mathrm{E}-\mathrm{W}$
3 $\Delta \mathrm{E}=\mathrm{q}+\mathrm{W}$
4 $q=\Delta \mathrm{E}+\mathrm{W}$
AMU-2004
Thermodynamics

272682 1 g ice absorbs 335J of heat to melt at $0^{\circ} \mathrm{C}$. The entropy change will be

1 $1.2 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$
2 $335 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$
3 $22.1 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$
4 $0.8 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$
BCECE-2010
Thermodynamics

272685 Which of the following represents the first law of thermodynamics

1 $\Delta \mathrm{U}=\mathrm{q}+\mathrm{W}$
2 $\Delta \mathrm{U}=\mathrm{p} \Delta \mathrm{V}$
3 $\Delta \mathrm{U}=\Delta \mathrm{H}+\mathrm{p} \Delta \mathrm{V}$
4 $\Delta \mathrm{H}=\mathrm{q}+\mathrm{W}$
CG PET-2012
Thermodynamics

272686 In photoelectric effect, if the energy required to overcome the attractive forces on the electron, (work function) of $\mathrm{Li}, \mathrm{Na}$ and $\mathrm{Rb}$ are $2.41 \mathrm{eV}$
$2.30 \mathrm{eV}$ and $2.09 \mathrm{eV}$ respectively, the work function of ' $K$ ' could approximately be in $\mathrm{eV}$.

1 2.52
2 2.20
3 2.35
4 2.01
BCECE-2014