01. First Law of Thermodynamics and Application
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Thermodynamics

272720 The work done during the expansion of a gas from a volume of $4 \mathrm{dm}^3$ to $6 \mathrm{dm}^3$ against a constant external pressure of $3 \mathrm{~atm}$ is (1 $\mathrm{L}$ atm $=101.32 \mathrm{~J})$

1 $-6 \mathrm{~J}$
2 $-608 \mathrm{~J}$
3 $+304 \mathrm{~J}$
4 $-304 \mathrm{~J}$
**[UPTU/UPSEE-2007]
Thermodynamics

272721 Three moles of an ideal gas expanded spontaneously into vacuum. The work done will be

1 infinite
2 3 Joules
3 9 Joules
4 zero
NEET-2010
Thermodynamics

272722 An ideal gas expands isothermally from $10^{-3} \mathrm{~m}^3$ to $10^{-2} \mathrm{~m}^3$ at $300 \mathrm{~K}$ against a constant pressure of $10^5 \mathrm{Nm}^2$. The work done on the gas is

1 $+270 \mathrm{~kJ}$
2 $-900 \mathrm{~J}$
3 $+900 \mathrm{~kJ}$
4 $-900 \mathrm{~kJ}$
NEET-Odisha 2019
Thermodynamics

272723 A gas is allowed expand in a well insulated container against a constant external pressure of $2.5 \mathrm{~atm}$ from an initial volume of $2.50 \mathrm{~L}$ to a final volume of $4.50 \mathrm{~L}$. The change in internal energy $\Delta U$ of the gas in joules will be

1 $-500 \mathrm{~J}$
2 $-505 \mathrm{~J}$
3 $+505 \mathrm{~J}$
4 $1136.25 \mathrm{~J}$
NEET-2017
Thermodynamics

272724 Under isothermal conditions, a gas at $300 \mathrm{~K}$ expands from $0.1 \mathrm{~L}$ to $0.25 \mathrm{~L}$ against a constant external pressure of 2 bar. The work done by the gas is [Given that $1 \mathrm{~L}$ bar $=100 \mathrm{~J}$ ]

1 $30 \mathrm{~J}$
2 $-30 \mathrm{~J}$
3 $5 \mathrm{~kJ}$
4 $25 \mathrm{~J}$
NEET-2019
Join With Us for More Updates
Thermodynamics

272720 The work done during the expansion of a gas from a volume of $4 \mathrm{dm}^3$ to $6 \mathrm{dm}^3$ against a constant external pressure of $3 \mathrm{~atm}$ is (1 $\mathrm{L}$ atm $=101.32 \mathrm{~J})$

1 $-6 \mathrm{~J}$
2 $-608 \mathrm{~J}$
3 $+304 \mathrm{~J}$
4 $-304 \mathrm{~J}$
**[UPTU/UPSEE-2007]
Thermodynamics

272721 Three moles of an ideal gas expanded spontaneously into vacuum. The work done will be

1 infinite
2 3 Joules
3 9 Joules
4 zero
NEET-2010
Thermodynamics

272722 An ideal gas expands isothermally from $10^{-3} \mathrm{~m}^3$ to $10^{-2} \mathrm{~m}^3$ at $300 \mathrm{~K}$ against a constant pressure of $10^5 \mathrm{Nm}^2$. The work done on the gas is

1 $+270 \mathrm{~kJ}$
2 $-900 \mathrm{~J}$
3 $+900 \mathrm{~kJ}$
4 $-900 \mathrm{~kJ}$
NEET-Odisha 2019
Thermodynamics

272723 A gas is allowed expand in a well insulated container against a constant external pressure of $2.5 \mathrm{~atm}$ from an initial volume of $2.50 \mathrm{~L}$ to a final volume of $4.50 \mathrm{~L}$. The change in internal energy $\Delta U$ of the gas in joules will be

1 $-500 \mathrm{~J}$
2 $-505 \mathrm{~J}$
3 $+505 \mathrm{~J}$
4 $1136.25 \mathrm{~J}$
NEET-2017
Thermodynamics

272724 Under isothermal conditions, a gas at $300 \mathrm{~K}$ expands from $0.1 \mathrm{~L}$ to $0.25 \mathrm{~L}$ against a constant external pressure of 2 bar. The work done by the gas is [Given that $1 \mathrm{~L}$ bar $=100 \mathrm{~J}$ ]

1 $30 \mathrm{~J}$
2 $-30 \mathrm{~J}$
3 $5 \mathrm{~kJ}$
4 $25 \mathrm{~J}$
NEET-2019
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Thermodynamics

272720 The work done during the expansion of a gas from a volume of $4 \mathrm{dm}^3$ to $6 \mathrm{dm}^3$ against a constant external pressure of $3 \mathrm{~atm}$ is (1 $\mathrm{L}$ atm $=101.32 \mathrm{~J})$

1 $-6 \mathrm{~J}$
2 $-608 \mathrm{~J}$
3 $+304 \mathrm{~J}$
4 $-304 \mathrm{~J}$
**[UPTU/UPSEE-2007]
Thermodynamics

272721 Three moles of an ideal gas expanded spontaneously into vacuum. The work done will be

1 infinite
2 3 Joules
3 9 Joules
4 zero
NEET-2010
Thermodynamics

272722 An ideal gas expands isothermally from $10^{-3} \mathrm{~m}^3$ to $10^{-2} \mathrm{~m}^3$ at $300 \mathrm{~K}$ against a constant pressure of $10^5 \mathrm{Nm}^2$. The work done on the gas is

1 $+270 \mathrm{~kJ}$
2 $-900 \mathrm{~J}$
3 $+900 \mathrm{~kJ}$
4 $-900 \mathrm{~kJ}$
NEET-Odisha 2019
Thermodynamics

272723 A gas is allowed expand in a well insulated container against a constant external pressure of $2.5 \mathrm{~atm}$ from an initial volume of $2.50 \mathrm{~L}$ to a final volume of $4.50 \mathrm{~L}$. The change in internal energy $\Delta U$ of the gas in joules will be

1 $-500 \mathrm{~J}$
2 $-505 \mathrm{~J}$
3 $+505 \mathrm{~J}$
4 $1136.25 \mathrm{~J}$
NEET-2017
Thermodynamics

272724 Under isothermal conditions, a gas at $300 \mathrm{~K}$ expands from $0.1 \mathrm{~L}$ to $0.25 \mathrm{~L}$ against a constant external pressure of 2 bar. The work done by the gas is [Given that $1 \mathrm{~L}$ bar $=100 \mathrm{~J}$ ]

1 $30 \mathrm{~J}$
2 $-30 \mathrm{~J}$
3 $5 \mathrm{~kJ}$
4 $25 \mathrm{~J}$
NEET-2019
NEET DIGITAL LIBRARY
Thermodynamics

272720 The work done during the expansion of a gas from a volume of $4 \mathrm{dm}^3$ to $6 \mathrm{dm}^3$ against a constant external pressure of $3 \mathrm{~atm}$ is (1 $\mathrm{L}$ atm $=101.32 \mathrm{~J})$

1 $-6 \mathrm{~J}$
2 $-608 \mathrm{~J}$
3 $+304 \mathrm{~J}$
4 $-304 \mathrm{~J}$
**[UPTU/UPSEE-2007]
Thermodynamics

272721 Three moles of an ideal gas expanded spontaneously into vacuum. The work done will be

1 infinite
2 3 Joules
3 9 Joules
4 zero
NEET-2010
Thermodynamics

272722 An ideal gas expands isothermally from $10^{-3} \mathrm{~m}^3$ to $10^{-2} \mathrm{~m}^3$ at $300 \mathrm{~K}$ against a constant pressure of $10^5 \mathrm{Nm}^2$. The work done on the gas is

1 $+270 \mathrm{~kJ}$
2 $-900 \mathrm{~J}$
3 $+900 \mathrm{~kJ}$
4 $-900 \mathrm{~kJ}$
NEET-Odisha 2019
Thermodynamics

272723 A gas is allowed expand in a well insulated container against a constant external pressure of $2.5 \mathrm{~atm}$ from an initial volume of $2.50 \mathrm{~L}$ to a final volume of $4.50 \mathrm{~L}$. The change in internal energy $\Delta U$ of the gas in joules will be

1 $-500 \mathrm{~J}$
2 $-505 \mathrm{~J}$
3 $+505 \mathrm{~J}$
4 $1136.25 \mathrm{~J}$
NEET-2017
Thermodynamics

272724 Under isothermal conditions, a gas at $300 \mathrm{~K}$ expands from $0.1 \mathrm{~L}$ to $0.25 \mathrm{~L}$ against a constant external pressure of 2 bar. The work done by the gas is [Given that $1 \mathrm{~L}$ bar $=100 \mathrm{~J}$ ]

1 $30 \mathrm{~J}$
2 $-30 \mathrm{~J}$
3 $5 \mathrm{~kJ}$
4 $25 \mathrm{~J}$
NEET-2019
Join With Us for More Updates
Thermodynamics

272720 The work done during the expansion of a gas from a volume of $4 \mathrm{dm}^3$ to $6 \mathrm{dm}^3$ against a constant external pressure of $3 \mathrm{~atm}$ is (1 $\mathrm{L}$ atm $=101.32 \mathrm{~J})$

1 $-6 \mathrm{~J}$
2 $-608 \mathrm{~J}$
3 $+304 \mathrm{~J}$
4 $-304 \mathrm{~J}$
**[UPTU/UPSEE-2007]
Thermodynamics

272721 Three moles of an ideal gas expanded spontaneously into vacuum. The work done will be

1 infinite
2 3 Joules
3 9 Joules
4 zero
NEET-2010
Thermodynamics

272722 An ideal gas expands isothermally from $10^{-3} \mathrm{~m}^3$ to $10^{-2} \mathrm{~m}^3$ at $300 \mathrm{~K}$ against a constant pressure of $10^5 \mathrm{Nm}^2$. The work done on the gas is

1 $+270 \mathrm{~kJ}$
2 $-900 \mathrm{~J}$
3 $+900 \mathrm{~kJ}$
4 $-900 \mathrm{~kJ}$
NEET-Odisha 2019
Thermodynamics

272723 A gas is allowed expand in a well insulated container against a constant external pressure of $2.5 \mathrm{~atm}$ from an initial volume of $2.50 \mathrm{~L}$ to a final volume of $4.50 \mathrm{~L}$. The change in internal energy $\Delta U$ of the gas in joules will be

1 $-500 \mathrm{~J}$
2 $-505 \mathrm{~J}$
3 $+505 \mathrm{~J}$
4 $1136.25 \mathrm{~J}$
NEET-2017
Thermodynamics

272724 Under isothermal conditions, a gas at $300 \mathrm{~K}$ expands from $0.1 \mathrm{~L}$ to $0.25 \mathrm{~L}$ against a constant external pressure of 2 bar. The work done by the gas is [Given that $1 \mathrm{~L}$ bar $=100 \mathrm{~J}$ ]

1 $30 \mathrm{~J}$
2 $-30 \mathrm{~J}$
3 $5 \mathrm{~kJ}$
4 $25 \mathrm{~J}$
NEET-2019