Question 1. Thermodynamics is applicable to
- (a) macroscopic system only
- (b) microsopic system only
- (c) homogeneous system only
- (d) heterogeneous system only
Answer: 1. (a) macroscopic system only
Question 2. An isochoric process takes place at constant
- (a) temperature
- (b) pressure
- (c) volume
- (d) concentration
Answer: 2. (c) volume
Question 3. For a cyclic process, the change in internal energy of the system is
- (A) always +ve
- (b) equal to zero
- (c) always -ve
- (d) none of the above
Answer: 3. (b) equal to zero
Question 4. Which of the following properties is not a function of state?
- (a) concentration
- (b) internal energy
- (c) enthalpy
- (d) entropy
Answer: 4. (a) concentration
Question 5. Which of the following always has a negative value?
- (a) heat of reaction
- (b) heat of solution
- (c) heat of combustion
- (d) heat of formation
Answer: 5. (c) heat of combustion
Question 6. The bond energy depends upon
- (a) size of the atom
- (b) electronegativity
- (c) bond length
- (d) all of the above
Answer: 6. (d) all of the above
Question 7. For an endothermic reaction.
- (a) ∆H is -ve
- (b) ∆H is +ve
- (c) ∆H is zero
- (d) none of these
Answer: 7. (b) ∆H is +ve
Question 8. The process depicted by the equation.
H2O (S) ——> H2O (l) ∆H = +1.43 kcal represents
- (a) fusion
- (b) melting
- (c) evaporation
- (d) boilirtg
Answer: 8. (a) fusion
Question 9.Which one is the correct unit for entropy?
- (a) KJ mol
- (b)JK mol
- (c)JK mol-1
- (d) KJ mol-1
Answer: 9. (c) JK mol-1