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MCQ- 41
All the following processes in the Born-Haber cycle may proceed by absorption of heat except
A. ∆H_I.E
B. ∆H_E.A
C. ∆H_at
D. ∆H_diss

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