An isolated system-
1. is a specified region where transfers of energy and mass take place
2. is a region of constant mass and only energy is allowed through the closed boundaries
3. is one in which mass within the system is not necessarily constant.
4. cannot transfer either energy or mass to or from the surroundings.
Volume, pressure, and temperature of an ideal gas are V, P, and T respectively. If the mass of its molecule is m, then its density is [k=boltzmann's constant]
(a) mkT (b)
On 0C, the pressure measured by the barometer is 760 mm. What will be pressure at 100C? [AFMC 2002]
1. 760 mm
2. 730 mm
3. 780 mm
4. None of these
By what percentage, should the pressure of a given mass of gas be increased, so as to decrease its volume by 10% at a constant temperature?
2. 7.2 %
In the adjacent V-T diagram what is the relation between ?
4. cannot be predicated