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

1. 37. Q37: Hybridization of carbon in ethene is:

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

2. 38. Q38: Tautomerism is shown by:

   • A. Aldehydes
   • B. Ketones
   • C. Alkenes
   • D. Both Aldehydes and Ketones

3. 39. Q39: Which of the following is a nucleophile?

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

4. 40. Q40: Which of the following is not an electrophile?

   • A. BF3
   • B. NO2+
   • C. AlCl3
   • D. NH3

5. 41. Q41: Which of the following is the correct IUPAC name for CH3-CH2-CH2OH?

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

6. 42. Q42: Which group shows +I effect?

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

7. 43. Q43: Which of the following is not an electrophile?

   • A. BF3
   • B. NO2+
   • C. AlCl3
   • D. NH3

8. 44. Q44: The resonance effect involves:

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

9. 45. Q45: Which of the following is a nucleophile?

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

10. 46. Q46: Hybridization of carbon in ethene is:

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

11. 47. Q47: Which group shows +I effect?

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

12. 48. Q48: Hybridization of carbon in ethene is:

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