Organic Molecules MCQs [Organic Chemistry]

By: Prof. Dr. Fazal Rehman | Last updated: May 23, 2025

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1. : Which statement is true?



2. : Which of the mentioned statement is false about resonance?



3. : The greater stability of benzyl carbonium ion as compared to t-butyl carbonium ion is due to



4. : Compounds in which carbons use only sp³ hybrid orbital for bond formation is



5. : What is the bond angle between hybrid orbitals in methane?



6. : In hydrogen bonding a hydrogen atom is bonded to which of the highly electronegative atoms?



7. : Which of the mentioned statements is not true regarding applications of H-bonding?



8. : The compounds whose formation require a host compound and a guest compound are known as



9. : What is the common host compound for the formation of inclusion compound?



10. : Which of the mentioned order of bond angles is not true?



11. : Which of the mentioned is the true order of bond dipole moment?

13. : An induction of dipole or polarity in non-polar bond, and consequent electron shifting along a chain of atoms is known as



14. : The chemistry of carbon compounds and its derivatives is known as



15. : Molecular orbital theory was developed by which of the mentioned scientist?



16. : Which of the mentioned bonds has least bond energy?



17. : The complete transfer of a shared pair of electrons to one of the atoms joined by a double or triple bond at the requirement of an attacking reagent is known as



18. : Which of the mentioned statements is not true regarding electrometric effect?



19. : The decrease in electron density at one position accompanied by a corresponding increase at other position is known as



20. : Which of the mentioned statements is not true regarding resonance?



21. : Which of the mentioned statements is not true regarding the important characteristics of aromatic compounds?



22. : Inductive effect can be used to explain



23. : True order of increasing –I effect of groups is

26. : How many electrons are present in benzene, naphthalene and anthracene?



27. : Which of the mentioned organic molecule is not aromatic?



28. : Cyclic polymers of ethylene glycol formed by condensation are known as



29. : Compounds consisting of two or more interlocked rings are known as



30. : The most stable carbonium ion is



31. : Each of the following group exerts a +I effect except



32. : Which of the mentioned compounds has highest dipole moment?



33. : The delocalization involving C-H sigma bond electrons is known as



34. : Which of the mentioned group will have hyperconjugation effect when attached to benzene?



35. : Which of the mentioned is most basic?



36. : The hybridization of C-atoms in 1, 2-butadiene is



37. : Which of the mentioned hybridization results in a linear organic molecule?



38. : Which of the mentioned molecules has shortest C-C bond length?



39. : Which of the mentioned is most acidic?



40. : Which of the mentioned effects best explains that o-nitrophenol is insoluble in water?



41. : Trimethylamine is a weaker base than dimethylamine is explained by



42. : All bond lengths in benzene are identical due to



43. : What is the bond length of C=C?



44. : Which of the mentioned hydrocarbons has the shortest C-C bond length?



45. : The carbon-carbon bond strength is maximum in



46. : The criteria for aromaticity is presence of



47. : C-O bond lengths in carboxylate anion are equal because of



48. : Chlorine when attached to benzene has



 

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