Aldehydes and KetonesReactivity Toward Nucleophilic Addition21Choose the best answerWhich compound is most reactive toward nucleophilic addition?ACH₃CHOBC₆H₅COCH₃CC₆H₅COC₆H₅DCH₃COCH₃ Like 0 Discuss 0Share
Aldehydes and KetonesAldol Condensation22Choose the best answerWhich compound undergoes aldol condensation most readily in dilute NaOH?AHCHOBCH₃CHOCC₆H₅CHOD(CH₃)₃CCHO Like 0 Discuss 0Share
UHS MDCAT 2023 ChemistryUHS MDCAT 2023 Past Paper#Aldehydes and Ketones#Tollens' Test23Choose the best answerThe appearance of a silver mirror in Tollens' test indicates the presence of which of the following? (UHS MDCAT 2023)AA ketoneBAn aldehydeCAn acidDAn alcohol Like 0 Discuss 0Share
Aldehydes and KetonesDehydrogenation of Alcohols24Choose the best answerTertiary alcohols do not undergo normal dehydrogenation to carbonyl compounds over heated copper because:AThey are readily oxidized.BThey lack an α-hydrogen on the carbon bearing –OH.CThey lack every β-hydrogen.DThey do not contain an –OH group. Like 0 Discuss 0Share
Aldehydes and KetonesTollens' Test25Choose the best answerWhich reagent can clearly distinguish acetaldehyde from acetophenone?ATollens' reagentBPhenylhydrazineCHydroxylamineD2,4-DNPH reagent Like 0 Discuss 0Share