Selected MCQ

Current Question
Which part of atom contains protons?
  • A. Orbit
  • B. Shell
  • C. Nucleus
  • D. Cloud
Correct Answer: C
Explanation:
Protons reside in nucleus.
Related Question 1
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 2
Which force acts on charged particles?
  • A. Gravitational
  • B. Magnetic
  • C. Electric
  • D. Nuclear
Correct Answer: C
Explanation:
Electric force acts on charges.
Related Question 3
Which layer contains clouds?
  • A. Troposphere
  • B. Stratosphere
  • C. Mesosphere
  • D. Thermosphere
Correct Answer: A
Explanation:
Weather and clouds occur in troposphere.
Related Question 4
Which bond has partial ionic character?
  • A. Nonpolar covalent
  • B. Polar covalent
  • C. Metallic
  • D. Hydrogen
Correct Answer: B
Explanation:
Polar covalent bonds share electrons unequally.
Related Question 5
Which layer contains ionosphere?
  • A. Troposphere
  • B. Stratosphere
  • C. Thermosphere
  • D. Mesosphere
Correct Answer: C
Explanation:
Ionosphere lies within thermosphere.