Aldehydes and Ketones2,4-DNPH Test71Choose the best answerWhich reagent gives an orange or yellow precipitate with both aldehydes and ketones?ATollens' reagentBFehling's solutionC2,4-Dinitrophenylhydrazine reagentDSchiff's reagent Like 0 Discuss 0Share
Aldehydes and KetonesReactivity Toward Nucleophilic Addition72Choose the best answerNucleophilic addition is most favoured in:ACH₃CH₂CH₂COCH₃B(CH₃)₂COCCH₃CH₂CHODCH₃CHO Like 0 Discuss 0Share
Aldehydes and KetonesPreparation of Ketones by Oxidation of Alcohols73Choose the best answerWhich reagent converts a secondary alcohol into a ketone?ALiAlH₄BPCCCNaBH₄DH₂/Pd Like 0 Discuss 0Share
Aldehydes and KetonesPolymerization of Formaldehyde74Choose the best answerThe white solid polymer of formaldehyde is:ATrioxaneBFormoseCParaformaldehydeDMetaldehyde Like 0 Discuss 0Share
Aldehydes and KetonesCyanohydrin Formation and Hydrolysis75Choose the best answerThe cyanohydrin of which compound gives an optically active hydroxy acid on hydrolysis?AHCHOBCH₃CHOCCH₃COCH₃DAll of these Like 0 Discuss 0Share