1. The Zeroth law of thermodynamics states that: (UEE:2003)
A. Two bodies that are separately in thermal equilibrium with a third body must be in
thermal equilibrium with each other.
B. The increase in internal energy of a system is equal to the sum of the energy entering
the system through heating, and the work done on the system.
C. No process is possible in which there is an overall decrease in the entropy of the universe.
D. No process or cycle is perfectly reversible and no refrigerator or heat engine can be
perfectly efficient.
2. The second law of thermodynamics does NOT imply that: (UEE:2003)
A. There is not any process in which there is an overall decrease in the entropy of the
universe.
B. The complete conversion of energy from a hot source into work is not possible.
C. Heat flows from colder body to hotter body as in the refrigerator without work done
on the system.
D. Perfectly reversible processes are impossible.
3. Which of the following statement follows from kinetic theory of gases? (UEE:2003)
A. The pressure of the gas is proportional to the average of square of molecular speed of particles.
B. The molecules undergo inelastic collisions with each other & with the walls of the container.
C. The forces between molecules of gas are strong at all times.
D. Newton laws of motion are a consequence of kinetic theory of gases.
4. A sample of gas is expanded to twice its original volume of Im³ in a quasi-static process
for which p = aV, with a = 5 x 10n/m³. How much work was done by the expanding
gas? (UEE: 2003). A. 0.75 MJ.
B. 1 MJ.
C. 7.5 MJ.
D. 1.5 MJ.
5. Which statement is NOT among the assumption made in the kinetic theory of gases? (UEE:2004)
A. There is no interaction between particles or between particles and the wall except
during collision.
B. Collisionsbetween particles and between particles and the wallsare perfectly elastic.
C. The volume occupied by the particle is negligible compared to the volume of the gas
as a whole.
D. The distribution of velocities of particles is uniform.
6. The temperature of a gas is due to: (UEE:2004)
A. The kinetic energy of the molecules.
B. The potential energy of the molecules.
C. The attractive force b/n the molecules.
D. The repulsive force b/n the molecules.
7. What does a curve drawn between two points on P-V diagram represent? (UEE:2004)
A. The state of the system.
B. A thermodynamic process.
C. Work done in a cyclic process.
D. Work done on or by the system.
8. In a reversible thermodynamics process, the system:- (UEE: 2005)
A. Is always close to equilibrium state.
B. Might never be close to any equilibrium state.
C. Is close to equilibrium states only at the beginning and end.
D. Is close to equilibrium states throughout, except at the beginning and end.