LiquidsAnomalous Behaviour of Water71Choose the best answerWater shows anomalous expansion when cooled from:A100°C to 0°CB4°C to 0°CC10°C to 4°CD0°C to −10°C Like 0 Discuss 0Share
LiquidsBoiling and Latent Heat of Vaporization72Choose 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
LiquidsHydrogen Bonding and Boiling Point73Choose the best answerThe anomalously high boiling points of compounds such as H₂O, HF and NH₃ are mainly due to:AMolecular massBHydrogen bondingCDensityDNumber of hydrogen atoms Like 0 Discuss 0Share
LiquidsSurface Tension74Choose the best answerWhich liquid has the highest surface tension among the following?AHexaneBMercuryCWaterDEthanol Like 0 Discuss 0Share
LiquidsDistribution of Molecular Energies75Choose the best answerThe molecular energies in a liquid are:ANot equally distributedBMinimum for all molecules at the bottomCMaximum for all molecules in the middleDNegligible at the surface Like 0 Discuss 0Share