LiquidsExtent of Hydrogen Bonding81Choose the best answerWhich substance shows the least extensive hydrogen bonding among the following?ANH₃BEthanolCH₂ODHF Like 0 Discuss 0Share
LiquidsPhase Changes82Choose the best answerThe reverse process of vaporization is:ASublimationBFusionCCondensationDFreezing Like 0 Discuss 0Share
LiquidsVapour Pressure and Temperature83Choose the best answerVapour pressure of a liquid increases with:ATemperatureBIntermolecular-force strengthCMolecular attractionDDecreasing molecular kinetic energy Like 0 Discuss 0Share
LiquidsHydrogen Bonding in Water84Choose the best answerHydrogen bonding is more extensive in water than in HF mainly because:AFluorine forms no hydrogen bondsBFluorine is less electronegative than oxygenCOxygen is always positively chargedDEach H₂O molecule can participate in more hydrogen bonds Like 0 Discuss 0Share
LiquidsEvaporation85Choose the best answerEvaporation is:AExothermicBEndothermicCNon-spontaneousDIndependent of molecular energy Like 0 Discuss 0Share