1. | 2. | ||
3. | 4. |
The correct option for free expansion of an ideal gas under adiabatic condition is:
1. and
2. and
3. and
4. and
Under the 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
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.
2.
3.
4.
Identify which of the following is the correct option for free expansion of an ideal gas under adiabatic condition.
1.
2.
3.
4.
Identify the correct statement regarding entropy:
1. | At absolute zero of temperature, the entropy of all crystalline substances is taken to be zero |
2. | At absolute zero of temperature, the entropy of a perfectly crystalline substance is +ve |
3. | At absolute zero of temperature, the entropy of a perfectly crystalline substance is taken to be zero |
4. | At 0 °C , the entropy of a perfectly crystalline substance is taken to be zero |