The correct option for free expansion of an ideal gas under adiabatic condition is:

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 |
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Under isothermal condition, a gas at 300 K expands from 0.1 L to 0.25 L against a constant external pressure of 2 bar. The work done by the gas is: [Given that 1 L bar=100 J]

1. 30 J

2. -30 J

3. 5 kJ

4. 25 J

Subtopic:  2nd & 3rd Law of Thermodynamics |
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Reversible expansion of an ideal gas under isothermal and adiabatic conditions are as shown in the figure:

 

ABIsothermal expansion

ACAdiabatic expansion

Which of the following options is not correct?

1. Sisothermal>Sadiabatic

2. TA=TB

3. Wisothermal>Wadiabatic

4. TC>TA

Subtopic:  2nd & 3rd Law of Thermodynamics |
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Which of the following p-V curve represents the maximum work done?
 
1. 2.
3. 4.
Subtopic:  2nd & 3rd Law of Thermodynamics |
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