LiquidsDensity of Ice and Water2631Choose the best answerIce at 0°C is:ALess dense than liquid waterBMore dense than liquid waterCEqual in density to water at 4°CDCompletely independent of temperature Like 0 Discuss 0Share
ElectrochemistryRules and Exceptions of Oxidation Number2632Choose the best answerThe oxidation numbers of oxygen in OF₂ and H₂O₂ are respectively:A−2, −1B+2, −1C−1, +2D+2, +1 Like 1 Discuss 0Share
Periodic TableIonic Radius2633Choose the best answerThe correct decreasing order of ionic radii is:ANa⁺ > Mg²⁺ > Li⁺ > Be²⁺BNa⁺ > Li⁺ > Mg²⁺ > Be²⁺CLi⁺ > Na⁺ > Mg²⁺ > Be²⁺DMg²⁺ > Na⁺ > Li⁺ > Be²⁺ Like 0 Discuss 0Share
SolidsCrystalline Solids and Melting Point2634Choose the best answerCrystalline solids generally have a sharp melting point because they possess:AIsotropic behaviourBA uniform long-range ordered structureCNo definite arrangementDA soft structure Like 0 Discuss 0Share
LiquidsCritical Temperature2635Choose the best answerThe highest temperature at which distinct liquid and vapour phases can coexist is called the:AMelting pointBCritical temperatureCFreezing pointDTriple-point temperature Like 0 Discuss 0Share