Chemistry of HydrocarbonsPreparation of Alkynes by Double Dehydrohalogenation66Choose the best answerAlkynes are commonly prepared by double dehydrohalogenation of:AGeminal or vicinal dihalidesBAlcohols onlyCAldehydes onlyDCarboxylic acids Like 0 Discuss 0Share
Chemistry of HydrocarbonsAromaticity and Reactivity of Benzene67Choose the best answerBenzene resists addition reactions mainly because:AIt has only σ bonds.BAddition would destroy its aromatic stabilization.CIt contains no π electrons.DIt is highly polar. Like 0 Discuss 0Share
Chemistry of HydrocarbonsFree-Radical Halogenation of Alkanes68Choose the best answerFree-radical substitution of an alkane with chlorine is initiated by:AHeat or UV lightBDilute HClCConcentrated H₂SO₄DKMnO₄ Like 0 Discuss 0Share
Chemistry of HydrocarbonsOxidation of Alkenes with KMnO₄69Choose the best answerPropene reacts with cold dilute alkaline KMnO₄ to form:APropaneBPropan-1-olCPropane-1,2-diolDPropanone Like 0 Discuss 0Share
Chemistry of HydrocarbonsTest for Terminal Alkynes70Choose the best answerWhich reagent is commonly used to test for a terminal alkyne?ANaOH(aq)BAmmoniacal AgNO₃CBr₂/CCl₄DDilute HCl Like 0 Discuss 0Share