First Law of Thermodynamics
PHXI12:THERMODYNAMICS

371249 \(200\;g\) water is heated from \(40^\circ C\) to \(60^\circ C\). Ignoring the slight expansion of water, the change in its internal energy is close to (Given specific heat of water \( = 4184\;J/kg\,K):\)

1 \(167.4\;\,kJ\)
2 \(8.4\,\;kJ\)
3 \(4.2\;\,kJ\)
4 \(16.7\;kJ\)
PHXI12:THERMODYNAMICS

371250 When heat energy of \(1500\;J\) is supplied to a gas at constant pressure, \(2.1 \times {10^5}N{m^{ - 2}}\) the change in its volume is \(2.5 \times {10^{ - 3}}\;{m^3}\). The increase in its internal energy is

1 \(450\;J\)
2 \(525\;J\)
3 \(975\;J\)
4 \(2025\;J\)
PHXI12:THERMODYNAMICS

371251 A sample of \(0.1\;g\) of water at \(100^\circ C\) and normal pressure \(\left( {1.013 \times {{10}^5}\,N{m^{ - 2}}} \right)\) requires \(54\,cal\) of heat energy to convert to steam at \(100^\circ C\). If the volume of the steam produced is \(167.1\,cc\), the change in internal energy of the sample, is

1 \(42.2\;J\)
2 \(84.5\;J\)
3 \(208.7\;J\)
4 \(104.3\;J\)
PHXI12:THERMODYNAMICS

371252 Statement A :
First law of thermodynamics says that heat flows from lower temperature to higher temperature.
Statement B :
Heat supplied to a system is always equal to the increase in its internal energy.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
PHXI12:THERMODYNAMICS

371249 \(200\;g\) water is heated from \(40^\circ C\) to \(60^\circ C\). Ignoring the slight expansion of water, the change in its internal energy is close to (Given specific heat of water \( = 4184\;J/kg\,K):\)

1 \(167.4\;\,kJ\)
2 \(8.4\,\;kJ\)
3 \(4.2\;\,kJ\)
4 \(16.7\;kJ\)
PHXI12:THERMODYNAMICS

371250 When heat energy of \(1500\;J\) is supplied to a gas at constant pressure, \(2.1 \times {10^5}N{m^{ - 2}}\) the change in its volume is \(2.5 \times {10^{ - 3}}\;{m^3}\). The increase in its internal energy is

1 \(450\;J\)
2 \(525\;J\)
3 \(975\;J\)
4 \(2025\;J\)
PHXI12:THERMODYNAMICS

371251 A sample of \(0.1\;g\) of water at \(100^\circ C\) and normal pressure \(\left( {1.013 \times {{10}^5}\,N{m^{ - 2}}} \right)\) requires \(54\,cal\) of heat energy to convert to steam at \(100^\circ C\). If the volume of the steam produced is \(167.1\,cc\), the change in internal energy of the sample, is

1 \(42.2\;J\)
2 \(84.5\;J\)
3 \(208.7\;J\)
4 \(104.3\;J\)
PHXI12:THERMODYNAMICS

371252 Statement A :
First law of thermodynamics says that heat flows from lower temperature to higher temperature.
Statement B :
Heat supplied to a system is always equal to the increase in its internal energy.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
PHXI12:THERMODYNAMICS

371249 \(200\;g\) water is heated from \(40^\circ C\) to \(60^\circ C\). Ignoring the slight expansion of water, the change in its internal energy is close to (Given specific heat of water \( = 4184\;J/kg\,K):\)

1 \(167.4\;\,kJ\)
2 \(8.4\,\;kJ\)
3 \(4.2\;\,kJ\)
4 \(16.7\;kJ\)
PHXI12:THERMODYNAMICS

371250 When heat energy of \(1500\;J\) is supplied to a gas at constant pressure, \(2.1 \times {10^5}N{m^{ - 2}}\) the change in its volume is \(2.5 \times {10^{ - 3}}\;{m^3}\). The increase in its internal energy is

1 \(450\;J\)
2 \(525\;J\)
3 \(975\;J\)
4 \(2025\;J\)
PHXI12:THERMODYNAMICS

371251 A sample of \(0.1\;g\) of water at \(100^\circ C\) and normal pressure \(\left( {1.013 \times {{10}^5}\,N{m^{ - 2}}} \right)\) requires \(54\,cal\) of heat energy to convert to steam at \(100^\circ C\). If the volume of the steam produced is \(167.1\,cc\), the change in internal energy of the sample, is

1 \(42.2\;J\)
2 \(84.5\;J\)
3 \(208.7\;J\)
4 \(104.3\;J\)
PHXI12:THERMODYNAMICS

371252 Statement A :
First law of thermodynamics says that heat flows from lower temperature to higher temperature.
Statement B :
Heat supplied to a system is always equal to the increase in its internal energy.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
PHXI12:THERMODYNAMICS

371249 \(200\;g\) water is heated from \(40^\circ C\) to \(60^\circ C\). Ignoring the slight expansion of water, the change in its internal energy is close to (Given specific heat of water \( = 4184\;J/kg\,K):\)

1 \(167.4\;\,kJ\)
2 \(8.4\,\;kJ\)
3 \(4.2\;\,kJ\)
4 \(16.7\;kJ\)
PHXI12:THERMODYNAMICS

371250 When heat energy of \(1500\;J\) is supplied to a gas at constant pressure, \(2.1 \times {10^5}N{m^{ - 2}}\) the change in its volume is \(2.5 \times {10^{ - 3}}\;{m^3}\). The increase in its internal energy is

1 \(450\;J\)
2 \(525\;J\)
3 \(975\;J\)
4 \(2025\;J\)
PHXI12:THERMODYNAMICS

371251 A sample of \(0.1\;g\) of water at \(100^\circ C\) and normal pressure \(\left( {1.013 \times {{10}^5}\,N{m^{ - 2}}} \right)\) requires \(54\,cal\) of heat energy to convert to steam at \(100^\circ C\). If the volume of the steam produced is \(167.1\,cc\), the change in internal energy of the sample, is

1 \(42.2\;J\)
2 \(84.5\;J\)
3 \(208.7\;J\)
4 \(104.3\;J\)
PHXI12:THERMODYNAMICS

371252 Statement A :
First law of thermodynamics says that heat flows from lower temperature to higher temperature.
Statement B :
Heat supplied to a system is always equal to the increase in its internal energy.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.