Organic Acids and Bases MCQs [Organic Chemistry]

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

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1. : Which is not a reasonable (strong) nucleophile?





2. : Higher basicity of pyridine than pyrrole is justified by which of the following?





3. : To distinguish among primary, secondary and tertiary alcohol, one would use the following experimental method:





4. : Inorganic acids (HCl, HBr, HNO3, etc.) have Ka value





5. : Weak acids have Ka value





6. : Which acid has the highest pKa value?





7. : Which have high pKa value?





8. : It has been observed that all the strong acids show same strength in the aqueous medium. This is known as __.





9. : Which statement is true regarding Arrhenius concept?





10. : Which does not represent Lewis base?





11. : Which statement does not represent Lewis idea of acids and bases?





12. : Which statement is not true with the concept of Bronsted concept of acids and bases?





13. : Which pairs do not represent Lowery acid-base pair?





14. : Which does not represent Lewis acid?





15. : The polarization in one sigma bond caused by the polarization of an adjacent sigma bond is known as __.





16. : Which groups exert –I effect?





17. : Which sets consist of only polar aprotic solvents?





18. : Why Maleic acid is stronger than fumaric acid?





19. : Which groups do not exert +I effect?

21. : Which is true order of amine strength in gas phase?





22. : Which haloacid is stronger acid?





23. : Which factors affect the strength of an acid?





24. : H2S is stronger acid than H2O because ______.





25. : Which factors affect the strengths of acids and bases?





26. : The equation which relates the reaction rates and equilibrium constants of many reactions is known as





27. : Which statement is not true with respect to applications of Hammett equations?





28. : Which statement is not true with respect to limitations of Hammett equation?





29. : Which equations represent linear free energy relationship?





30. : Which is a nucleophile?





31. : Which is not a nucleophile?





32. : Compounds that have more than one electron pair on different atoms and may donate to carbon in substrate are known as __.





33. : Tert-butyl cation is stabilized through which phenomenon?





34. : In solutions, the acidity of simple alcohols is in the order?
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