Thermodynamics-I MCQ B.Sc.II UG degree course Semester-III Dr.BAMU Aurngabad

B.Sc. Second year Undergraduate degree course

Semester Third

Physical Chemistry

Chapter – Thermodynamics I

Multiple Choice questions

1. An isobaric process takes place at constant----
a) Temperature
b) Pressure
c) Volume
d) Concentration

2. A system in which no thermal energy passes into or out the system is called----
a) Adiabatic process
b) An open system
c) A reversible system
d) A closed system

3. Which of the following is intensive property-------?
a) Length
b) Mass
c) Density
d) Volume

4. The heat capacity at constant pressure is related to heat capacity at constant volume by the relation--
a) Cp +R= Cv
b) Cv-R=Cp
c) Cp-Cv=R
d) R-Cp=Cv

5. Entropy is a measure of the molecules in the system
a) Concentration
b) Velocity
c) Momentum
d) Disorder

6. Which of the following is true for a cyclic process?
a) ΔE = 0
b) ΔE = q – w
c) q = w
d) all of these

7. The efficiency of a heat operating between 400 k and 300 k is
a) 1.0
b) 0.25
c) 0.75
d) 0.50

8. Boiling of water in beaker is an example of
a) Open system
b) Closed system
c) Isolated system
d) All of these

9. The thermos flask is an example of ---------- system
a) Open
b) Close
c) isolated
d) None of these

10. Example of intensive property is
a) mass
b) volume
c) heat capacity
d) density

11. Enthalpy of a system is defined by equation
a) ΔH = ΔE + PΔV
b) H = E - PV
c) H = E + PΔV
d) H = E + PV

12. for an isothermal process
a) ΔV = 0
b) q = 0
c) ΔE = 0
d) ΔS = 0

13. The efficiency of heat engine is always -------
a) Less than one
b) greater than one
c) equal to zero
d) equal to one

14. Which of the following is not a state function
a) Entropy
b) Heat
c) Enthalpy
d) Internal energy

15. The entropy of the universe
a) Tends towards maximum
b) Remains constant
c) Tends towards minimum
d) None of these

16. When ice is converted into water, its entropy is
a) Increases
b) Decrease
c) Remains same
d) Zero

17. Which of the following is an extensive property?
a) Surface tension
b) Refractive index
c) Density
d) Volume

18. The work done in the reversible expansion of a gas from initial state A to final state B is
a) Maximum
b) Minimum
c) Zero
d) Infinity

19. The amount of heat required to raise the temperature of one mole of a substance by 1°C is called
a) Heat capacity
b) Molar heat capacity
c) Molar heat
d) Molar capacity