Aldehydes and KetonesIUPAC Nomenclature of Aldehydes61Choose the best answerThe preferred IUPAC name of glyoxal is:AEthanedioneBEthanedialCOxoethanalDEthane-1,2-dione Like 0 Discuss 0Share
Aldehydes and KetonesTollens' Test62Choose the best answerTollens' reagent is:AAmmoniacal AgNO₃ solutionBAmmoniacal CuSO₄ solutionCAcidified K₂Cr₂O₇ solutionDZn(Hg)/HCl Like 0 Discuss 0Share
Aldehydes and KetonesBoiling Points of Aldehydes and Ketones63Choose the best answerKetones generally have slightly higher boiling points than corresponding aldehydes mainly because ketones often have:AIntermolecular O–H hydrogen bondingBA larger molecular dipole momentCLower molecular massesDMore α-hydrogen atoms Like 0 Discuss 0Share
Aldehydes and KetonesClemmensen and Wolff–Kishner Reduction64Choose the best answerBenzaldehyde undergoes Clemmensen or Wolff–Kishner reduction to form:ABenzyl alcoholBBenzoic acidCTolueneDBenzophenone Like 0 Discuss 0Share
Aldehydes and KetonesPreparation from Calcium Salts of Carboxylic Acids65Choose the best answerWhich combination is correctly matched?ACalcium formate → Methanal; Calcium acetate → Propanone; Calcium formate + calcium acetate → EthanalBCalcium formate → Propanone; Calcium acetate → Ethanal; Calcium formate + calcium acetate → MethanalCCalcium formate → Methanal; Calcium acetate → Ethanal; Calcium formate + calcium acetate → PropanoneDCalcium formate → Ethanal; Calcium acetate → Propanone; Calcium formate + calcium acetate → Methanal Like 0 Discuss 0Share