Fundamental Principles of Organic ChemistryHyperconjugation2406Choose the best answerWhich statement about hyperconjugation is correct?AIt stabilizes carbocations and carbon radicals.BIt strongly stabilizes simple alkyl carbanions.CIt destabilizes carbocations only.DIt has no effect on carbon intermediates. Like 0 Discuss 0Share
KMU MDCAT 2024 Chemistry#Macromolecules#Proteins2407Choose the best answerThe protein present in haemoglobin has ______ structure. (KMU MDCAT 2024)APrimaryBSecondaryCTertiaryDQuaternary Like 0 Discuss 0Share
Aldehydes and KetonesBoiling Points of Aldehydes and Ketones2408Choose 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
LiquidsHydrogen Bonding and Vapour Pressure2409Choose the best answerHydrogen bonding lowers the vapour pressure most clearly in:AHClBHBrCHFDHI Like 1 Discuss 0Share
KMU MDCAT 2024 Chemistry#Aldehydes and Ketones#Carbonyl Compounds2410Choose the best answerWhich aldehyde is more reactive towards nucleophilic addition? (KMU MDCAT 2024)AAcetaldehydeBButyraldehydeCFormaldehydeDPropionaldehyde Like 0 Discuss 0Share