MCQ- 41
All the following processes in the Born-Haber cycle may proceed by absorption of heat except
A. ∆HI.E
B. ∆HE.A
C. ∆Hat
D. ∆Hdiss
Answer: B
MCQ- 42
During balancing of redox equation by oxidation number method the ‘O’ and ‘H’ atoms are balanced by
A. Method of difference
B. Inspection method
C. Ion-electron method
D. Spectroscopic method
Answer: B
MCQ- 43
Which of the following is incorrect about the enthalpy of neutralization?
A. Its maximum value is 57.5 KJ/mol
B. It is equal to the enthalpy of the formation of water from ions.
C. It is more than 57.5 Kj/mole when one of the acids or base is weaker.
D. Energy is released in this process.
Answer: C
MCQ- 44
Standard enthalpy of Al2O3 cannot be measured because
A. It does not catch fire
B. It reacts with O2
C. Protective layer of oxide covers the surface
D. It requires a catalyst
Answer: C
MCQ- 45
The dissolution of ammonium chloride in water is a/an
A. Endothermic process
B. Exothermic Process
C. Spontaneous Process
D. Both A&C
Answer: D
