LiquidsVapour Pressure and Intermolecular Forces2561Choose the best answerWhich liquid has the lowest vapour pressure among the following?AMethanalBEthanalCPropanolDEthanol Like 0 Discuss 0Share
GasesAvogadro's Law2562Choose the best answerAccording to Avogadro's law, equal volumes of gases at the same temperature and pressure contain:AEqual numbers of moleculesBEqual massesCEqual molar massesDEqual densities Like 0 Discuss 0Share
StoichiometryMole–Mass Stoichiometry2563Choose the best answerWhat mass of MgO is produced when 0.5 mol Mg burns in excess O₂? 2Mg + O₂ → 2MgOA40 gB30 gC10 gD20 g Like 0 Discuss 0Share
GasesCharles's Law2564Choose the best answerIf the absolute temperature of a gas is doubled at constant pressure, its volume will:ARemain unchangedBBecome halfCBecome doubleDBecome four times Like 0 Discuss 0Share
Chemistry of HydrocarbonsFriedel–Crafts Acylation2565Choose the best answerWhich reagent combination is used for Friedel–Crafts acylation?AAcyl chloride + AlCl₃BAlcohol + H₂SO₄CHNO₃ + H₂SO₄DBr₂/H₂O Like 0 Discuss 0Share