Chemistry of HydrocarbonsPreparation of Alkynes from Calcium Carbide46Choose the best answerCalcium carbide reacts with water to produce:AEthane + Ca(OH)₂BEthene + CaOCEthyne + Ca(OH)₂DMethane + CaCO₃ Like 0 Discuss 0Share
Chemistry of HydrocarbonsElectrophiles in Aromatic Substitution47Choose the best answerWhich of the following is NOT an electrophile?ANO₂⁺BSO₃CCl⁺DOH⁻ Like 0 Discuss 0Share
Sindh MDCAT 2022 Chemistry#Alkanes#Chemistry of Hydrocarbons48Choose the best answerGrignard reagent, e.g. methyl magnesium halide, reacting with methyl halide gives:An-Propyl chlorideBButaneCIsopropyl chlorideDEthane Like 0 Discuss 0Share
Chemistry of HydrocarbonsFree-Radical Halogenation of Alkanes49Choose the best answerWhich reaction is a termination step in free-radical chlorination?ACH₄ + Cl• → CH₃• + HClBCH₃• + Cl₂ → CH₃Cl + Cl•CCl• + Cl• → Cl₂DCl₂ → 2Cl• Like 0 Discuss 0Share
Chemistry of HydrocarbonsKekulé Structure of Benzene50Choose the best answerThe cyclic structural formula of benzene with alternating double bonds was proposed by:AFaradayBDavyCKekuléDWöhler Like 0 Discuss 0Share