LiquidsBoiling Point16Choose the best answerThe temperature at which the vapour pressure of a liquid becomes equal to the external pressure is its:ACritical temperatureBBoiling pointCMelting pointDTriple point Like 0 Discuss 0Share
LiquidsBoiling and Latent Heat of Vaporization17Choose the best answerAt constant external pressure, once a pure liquid is boiling, additional heat mainly:ARaises its boiling temperature continuouslyBConverts liquid into vapourCLowers its vapour pressureDDecreases molecular energy Like 0 Discuss 0Share
LiquidsLiquid–Vapour Equilibrium18Choose the best answerAt the boiling point, the liquid and its vapour in equilibrium have the same:AAverage kinetic energyBPotential energyCMolecular separationDIntermolecular-force strength Like 0 Discuss 0Share
LiquidsBoiling Point and External Pressure19Choose the best answerThe boiling point of a liquid increases when:AExternal pressure increasesBSurface area increasesCAmount of liquid increasesDContainer size increases Like 0 Discuss 0Share
LiquidsBoiling Point and External Pressure20Choose the best answerThe boiling point of a liquid primarily depends on:AShape of the containerBExternal pressureCAmount of liquidDType of burner Like 0 Discuss 0Share