Chemistry of HydrocarbonsPartial Reduction of Alkynes106Choose the best answerWhich reagent converts an alkyne mainly into a trans-alkene?AH₂/PdBH₂/Lindlar catalystCNa/NH₃(l)DH₂/Ni Like 0 Discuss 0Share
Chemistry of HydrocarbonsPartial Reduction of Alkynes107Choose the best answer2-Butyne treated with Na/NH₃(l) gives:Acis-2-ButeneBtrans-2-ButeneCButaneD1-Butene Like 0 Discuss 0Share
Chemistry of HydrocarbonsActivating and Deactivating Groups108Choose the best answerThe decreasing order of activating effect is:A–NH₂ > –OH > –CH₃B–CH₃ > –OH > –NH₂C–OH > –NH₂ > –CH₃D–CH₃ > –NH₂ > –OH Like 0 Discuss 0Share
Chemistry of HydrocarbonsHistorical Structures of Benzene109Choose the best answerThe centric representation of benzene is historically associated with:ADewarBLadenburgCKekuléDArmstrong and Baeyer Like 0 Discuss 0Share
Chemistry of HydrocarbonsPreparation of Alkenes by Dehydrohalogenation110Choose the best answerAlcoholic KOH generally favors:ASubstitutionBEliminationCAdditionDPolymerization Like 0 Discuss 0Share