Selected MCQ

Current Question
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 1
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 2
Which base is strong?
  • A. NH₃
  • B. NaOH
  • C. CH₃COOH
  • D. H₂O
Correct Answer: B
Explanation:
NaOH fully dissociates.
Related Question 3
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 4
Which compound has trigonal planar geometry?
  • A. NH₃
  • B. CH₄
  • C. BF₃
  • D. H₂O
Correct Answer: C
Explanation:
BF₃ is sp² hybridized.
Related Question 5
Which base turns red litmus blue?
  • A. Acid
  • B. Base
  • C. Neutral
  • D. Salt
Correct Answer: B
Explanation:
Bases change litmus color.