Alcohols and Phenols MCQs [Organic Chemistry]

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

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1. : Which of the mentioned compounds should be least soluble in water?



2. : Which of the mentioned is most acidic?



3. : Which of the mentioned reagent cannot be used to detect the phenolic group?



4. : An aromatic compound has a molecular formula C7H8O. How many isomers are possible for this compound?



5. : Which of the mentioned is a wood alcohol?



6. : Which of the mentioned alcohol is produced from fermentation of sugars?



7. : The composition of rectified spirit is



8. : Carbolic acid is ____.



9. : Which of the mentioned is trihydric phenol?



10. : Grignard reagent reacts with aldehydes and ketones to form



11. : There are total _________ primary alcohols that are possible for C4H9OH?



12. : What is an isomer of ethanol?



13. : n-Propyl alcohol and iso-propyl alcohol is an example of which of the following?



14. : Reduction of aldehydes either by hydrogenation, or in the presence of metal catalyst such as Ni, Pt. or Pd gives



15. : Ethyl acetate reacts with Grignard reagent to form



16. : In which of the mentioned group, each member gives a positive iodoform test?



17. : The reaction of formaldehyde and Grignard reagent followed by acidification gives



18. : The enzyme that converts sucrose to glucose and fructose is called



19. : The enzyme that converts starch to maltose is called



20. : Which of the mentioned alcohol is least soluble in water?



21. : What is the order of reactivity of alcohols with sodium metal?

23. : Which of the mentioned will be readily attacked by an electrophile?



24. : Which of the mentioned statements regarding phenols is not correct?



25. : Phenol on reaction with ethanoic anhydride in the presence of sodium ethanoate gives



26. : Each of the following when present at para position decreases the acidic strength of phenol excluding which of the following?



27. : Which of the mentioned compounds is formed by catalytic reduction of phenol?



28. : Glycerol on dehydration produces __.



29. : Phenol on treatment with Con. HNO3 gives which of the following?



30. : Treatment of phenol with cold dilute nitric acid gives



31. : Which of the mentioned is the strongest base?



32. : Which of the mentioned is the strongest base



33. : What is the suitable reagent for dehydration of alcohol?



34. : Which is the best reagent for producing an alkyl chloride from an alcohol?



35. : On oxidation, which of the following gives ketone?



36. : What is formed when a primary alcohol undergoes catalytic dehydrogenation?



37. : Alcohols can be taken from all methods excluding which of the following?



38. : Alkyl halides react with aqueous NaOH to form ______ .



39. : The acid-catalyzed addition of water to an alkene produces which of the following?



40. : What is the increasing reactivity order of CH3OH, CH3CH2OH, CH3CH2CH2OH and (CH3)2CHOH towards sodium metal?



 

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