Chemistry of HydrocarbonsMechanism of Electrophilic Aromatic Substitution61Choose the best answerIn electrophilic aromatic substitution, benzene attacks the electrophile using its:Aσ electronsBπ electronsCLone-pair electronsDC–H σ bond only Like 0 Discuss 0Share
UHS MDCAT 2023 ChemistryUHS MDCAT 2023 Past Paper#Alkynes#Chemistry of Hydrocarbons62Choose the best answerWhich method is used to prepare alkynes? (UHS MDCAT 2023)ADehalogenation of vicinal dihalides in methanolBDehydration of alcohols over Al₂O₃CDouble dehydrohalogenation of vicinal dihalides using a strong baseDHydrolysis of dicarboxylic acid salts Like 0 Discuss 0Share
Chemistry of HydrocarbonsReactivity in Electrophilic Aromatic Substitution63Choose the best answerWhich compound is nitrated with the greatest difficulty?ABenzeneBNitrobenzeneCTolueneDPhenol Like 0 Discuss 0Share
Chemistry of HydrocarbonsFree-Radical Halogenation of Alkanes64Choose the best answerWhich compound is NOT formed during free-radical chlorination of methane?AHClBCHCl₃CC₂H₆DCH₃CHO Like 0 Discuss 0Share
MDCAT Chemistry Past Papers Reconduct 2023#Chemistry of Hydrocarbons#Petroleum Fractions65Choose the best answerPetrol (Gasoline) is a mixture of: (MDCAT Reconduct 2023)AMethane and ethaneBButane and propaneCOctane and nonaneDHexane and heptane Like 0 Discuss 0Share