Chemistry of HydrocarbonsStructure and Bonding in Benzene56Choose the best answerThe total number of σ and π bonds in one molecule of benzene is:A6 σ and 9 πB9 σ and 3 πC12 σ and 3 πD6 σ and 6 π Like 1 Discuss 0Share1
Chemistry of HydrocarbonsFriedel–Crafts Acylation57Choose the best answerThe electrophile in Friedel–Crafts acylation is:ARCO⁺BR⁻CCl⁻DOH⁻ Like 2 Discuss 0Share
Chemistry of HydrocarbonsStructure of Benzene58Choose the best answerWhich statement about benzene is correct?AIts molecular formula is C₆H₆.BEach carbon atom is sp² hybridized.CAll six C–C bonds are equivalent in length.DAll of these Like 2 Discuss 0Share
Chemistry of HydrocarbonsPhysical States of Hydrocarbons59Choose the best answerAccording to the approximate textbook physical-state ranges used for these homologous series, which sequence is correct?AAlkanes: C₅–C₁₇; Alkenes: C₅–C₁₅; Alkynes: C₅–C₁₂BAlkanes: C₅–C₁₂; Alkenes: C₅–C₁₅; Alkynes: C₅–C₁₇CAlkanes: C₅–C₁₇; Alkenes: C₅–C₁₂; Alkynes: C₅–C₁₅DAll three series have exactly the same liquid range Like 0 Discuss 0Share
Chemistry of HydrocarbonsHydration of Alkynes60Choose the best answerEthyne on hydration in the presence of HgSO₄/H₂SO₄ ultimately gives:AEthanolBEthanalCEthanoic acidDEthene Like 2 Discuss 0Share