Selected MCQ

Current Question
Which compound has strongest intermolecular forces?
  • A. CH₄
  • B. NH₃
  • C. H₂O
  • D. CO₂
Correct Answer: C
Explanation:
Water forms extensive hydrogen bonding network.
Related Question 1
Which compound is strongest base?
  • A. NH₃
  • B. OH⁻
  • C. CH₃COO⁻
  • D. Cl⁻
Correct Answer: B
Explanation:
Hydroxide is strong base in water.
Related Question 2
Which factor increases acidity of organic compounds?
  • A. Electron donating groups
  • B. Electron withdrawing groups
  • C. Alkyl substitution
  • D. Decreasing electronegativity
Correct Answer: B
Explanation:
Electron-withdrawing stabilizes conjugate base.
Related Question 3
Which compound has trigonal planar geometry?
  • A. NH₃
  • B. CH₄
  • C. BF₃
  • D. H₂O
Correct Answer: C
Explanation:
BF₃ is sp² hybridized.
Related Question 4
Which force is strongest?
  • A. Gravitational
  • B. Electromagnetic
  • C. Weak
  • D. Strong
Correct Answer: D
Explanation:
Strong force binds nucleons.
Related Question 5
Which compound is most polar?
  • A. CO₂
  • B. CH₄
  • C. NH₃
  • D. BF₃
Correct Answer: C
Explanation:
NH₃ has net dipole moment.