Can two isothermal curves cut each other
(1) Never
(2) Yes
(3) They will cut when temperature is 0°C
(4) Yes, when the pressure is critical pressure
A vessel containing 5 litres of a gas at 0.8 m pressure is connected to an evacuated vessel of volume 3 litres. The resultant pressure inside will be (assuming whole system to be isolated)
(1) 4/3 m
(2) 0.5 m
(3) 2.0 m
(4) 3/4 m
For an isothermal expansion of a perfect gas, the value of is equal -
(1)
(2)
(3)
(4)
If a gas is heated at constant pressure, its isothermal compressibility
(1) Remains constant
(2) Increases linearly with temperature
(3) Decreases linearly with temperature
(4) Decreases inversely with temperature
In isothermal expansion, the pressure is determined by:
1. | Temperature only |
2. | Compressibility only |
3. | Both temperature and compressibility |
4. | None of these |
The isothermal bulk modulus of a perfect gas at normal pressure is -
(1)
(2)
(3)
(4)
In an isothermal change, an ideal gas obeys:
1. Boyle's law
2. Charles law
3. Gay-Lussac law
4. None of the above
Under isothermal conditions, the volumes of ideal gas A and actual gas B grow from V to 2 V. The increase in internal energy:
1. | will be the same in both A and B. |
2. | will be zero in both the gases. |
3. | of B will be more than that of A. |
4. | of A will be more than that of B. |
The specific heat of a gas in an isothermal process is:
1. Infinite
2. Zero
3. Negative
4. Remains constant
The latent heat of vaporisation of water is 2240 J/gm. If the work done in the process of expansion of 1 g is 168 J, then increase in internal energy is
(1) 2408 J
(2) 2240 J
(3) 2072 J
(4) 1904 J