Selected MCQ

Current Question
Which ionization requires most energy?
  • A. First
  • B. Second
  • C. Third
  • D. Fourth
Correct Answer: D
Explanation:
Successive ionizations require increasingly more energy.
Related Question 1
Which element has highest ionization energy?
  • A. Na
  • B. Mg
  • C. Ar
  • D. K
Correct Answer: C
Explanation:
Noble gases have full shells and high ionization energy.
Related Question 2
Which energy source is sustainable?
  • A. Coal
  • B. Oil
  • C. Solar
  • D. Gas
Correct Answer: C
Explanation:
Solar is sustainable.
Related Question 3
Which energy is motion?
  • A. Potential
  • B. Thermal
  • C. Kinetic
  • D. Chemical
Correct Answer: C
Explanation:
Motion defines kinetic energy.
Related Question 4
The partition function (Z) is related to Helmholtz free energy (F) by:
  • A. (F = kT \ln Z)
  • B. (F = -kT \ln Z)
  • C. (F = Z/kT)
  • D. (F = k/Z)
Correct Answer: B
Explanation:
Helmholtz free energy derives from partition function logarithm.
Related Question 5
Which energy is stored?
  • A. Kinetic
  • B. Potential
  • C. Thermal
  • D. Light
Correct Answer: B
Explanation:
Potential energy is stored.