LiquidsHydrogen Bonding in Biomolecules66Choose the best answerThe spiral or α-helical structure of protein chains is stabilized mainly by:AIonic bonding onlyBHydrogen bondingCMetallic bondingDLondon forces only Like 0 Discuss 0Share
LiquidsHydrogen Bonding and Boiling Point67Choose the best answerWhich compound has the highest boiling point?ANH₃BCH₄CH₂ODHF Like 0 Discuss 0Share
MDCAT Chemistry Past Papers 2024Sindh MDCAT Chemistry Past Paper 2024#Liquids#Surface Tension68Choose the best answerWhich of the following liquids shows maximum surface tension?AWaterBMercuryCEthyl alcoholDChloroform Like 0 Discuss 0Share
LiquidsLiquid–Vapour Dynamic Equilibrium69Choose the best answerWhen evaporation and condensation occur at equal rates in a closed container:AThe liquid disappearsBDynamic equilibrium is establishedCBoiling starts automaticallyDVapour formation stops Like 0 Discuss 0Share
LiquidsHydrogen Bonding and Volume Contraction70Choose the best answerWhen 50 mL ethanol is mixed with 50 mL water, the final volume may be less than 100 mL mainly because of:AVapour pressureBHydrogen bondingCBoilingDChemical reaction Like 0 Discuss 0Share