An isolated system-
1. | is a specified region where transfer of energy and mass takes 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 neither energy nor 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]
1. | \(mkT\) | 2. | \(\dfrac{P}{kT}\) |
3. | \(\dfrac{P}{kTV}\) | 4. | \(\dfrac{Pm}{kT}\) |
On \(0^{\circ}\text{C}\), the pressure measured by the barometer is \(760\) mm. What will be pressure at \(100^{\circ}\text{C}\)?
1. \(760~\text{mm}\)
2. \(730~\text{mm}\)
3. \(780~\text{mm}\)
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?
1. 5%
2. 7.2 %
3. 12.5%
4. 11.1%
In the adjacent V-T diagram, what is the relation between ?
1.
2.
3.
4. cannot be predicated