Organic Chemistry – Basic Principles – Multiple Choice Questions (MCQs)

1. 25. Q25: Which of the following is a nucleophile?

   • A. H+
   • B. Cl-
   • C. NO2+
   • D. SO3

2. 26. Q26: The resonance effect involves:

   • A. Inductive effect
   • B. Delocalization of electrons
   • C. Charge separation
   • D. Only sigma bonds

3. 27. Q27: Hybridization of carbon in ethene is:

   • A. sp
   • B. sp2
   • C. sp3
   • D. sp3d

4. 28. Q28: The bond angle in methane is:

   • A. 90°
   • B. 109.5°
   • C. 120°
   • D. 180°

5. 29. Q29: Which of the following statements is correct for inductive effect?

   • A. It involves delocalization of electrons
   • B. It is a permanent effect
   • C. It operates through space
   • D. It is a temporary effect

6. 30. Q30: Which of the following is the correct IUPAC name for CH3-CH2-CH2OH?

   • A. Propanol
   • B. Butanol
   • C. Ethanol
   • D. Methanol

7. 31. Q31: Which of the following is a nucleophile?

   • A. H+
   • B. Cl-
   • C. NO2+
   • D. SO3

8. 32. Q32: The resonance effect involves:

   • A. Inductive effect
   • B. Delocalization of electrons
   • C. Charge separation
   • D. Only sigma bonds

9. 33. Q33: Which of the following can show hyperconjugation?

   • A. Methane
   • B. Ethane
   • C. Propene
   • D. Ethyne

10. 34. Q34: The resonance effect involves:

    • A. Inductive effect
    • B. Delocalization of electrons
    • C. Charge separation
    • D. Only sigma bonds

11. 35. Q35: Which group shows +I effect?

    • A. NO2
    • B. CN
    • C. CH3
    • D. COOH

12. 36. Q36: Which of the following statements is correct for inductive effect?

    • A. It involves delocalization of electrons
    • B. It is a permanent effect
    • C. It operates through space
    • D. It is a temporary effect