Chemistry of HydrocarbonsStructure and Hybridization of Alkanes276Choose the best answerThe C–C bond in ethane is formed by overlap of:Asp³–sp³ orbitalsBsp²–sp² orbitalsCsp–sp orbitalsDp–p orbitals Like 0 Discuss 0Share
Stoichiometry#Atomic Structure#Isotopes277Choose the best answerHow is the relative atomic mass of an element with several isotopes calculated?AThe mass of the lightest isotope onlyBA weighted average based on isotopic abundanceCThe mass number of the most abundant isotope onlyDThe total number of neutrons Like 0 Discuss 0Share
Sindh MDCAT 2021 Chemistry#Macromolecules#Polymers278Choose the best answerBakelite is a polymer of phenol and:AFormaldehydeBEthanolCEtheneDBenzene Like 0 Discuss 0Share
Carboxylic AcidsPreparation by Hydrolysis of Carboxylic Acid Derivatives279Choose the best answerHydrolysis of which compound can produce a carboxylic acid?AAcyl chlorideBEsterCNitrileDAll of these Like 0 Discuss 0Share
Chemical KineticsOverall Order of Reaction280Choose the best answerFor the rate law Rate = k[A]¹ᐟ²[B]³ᐟ², the overall order of reaction is:A1.5B2C3D1 Like 0 Discuss 0Share