1. Which one is not a state function
A. Internal energy
B. Enthalpy
C. Gibbs free energy
D. Work
✅ The correct answer is option D.
ThermoChemistry MCQs
2. If the ΔH value is less than zero than reaction will be
A. Exothermic
B. Endothermic
C. May or may not be Exothermic or Endothermic
D. None of these
✅ The correct answer is option A.
3. If the internal energy of the system is increased
A. Change in state of the system is increased
B. The temperature of the system may rise
C. The chemical reaction may take place
D. All
✅ The correct answer is option D.
4. Which is true for a spontaneous endothermic process?
A. ΔH<0
B. ΔG<0
C. ΔS<0
D. ΔG>0
✅ The correct answer is option B.
5. A reaction has values of ΔH and ΔS which are both positive. The reaction
A. Is spontaneous
B. Spontaneity is temperature dependent
C. Has an increasing free energy
D. Is non-spontaneous
✅ The correct answer is option D.
6. ________________ is study about energy of a chemical system
A. Thermochemistry
B. Thermodynamics
C. Chemical kinetics
D. Stoichiometry
✅ The correct answer is option A.
7. The environment in which a system is studied is
A. State function
B. Phase
C. Surrounding
D. State
✅ The correct answer is option C.
9. Anything which depends upon the initial and final state of a system is
A. Environment
B. Surrounding
C. State function
D. Enthalpy
✅ The correct answer is option C.
10. The total energy of a system is
A. P.E + K.E
B. P.E + heat energy
C. K.E + heat energy
D. P.E + mechanical energy
✅ The correct answer is option A.