ElectrochemistryElectrolysis of Aqueous Solutions886Choose the best answerDuring electrolysis of aqueous KNO₃, H₂ is produced at the cathode instead of K because:AK⁺ has a more positive reduction potential than H⁺BPotassium is less reactive than hydrogenCReduction of water/H⁺ is easier than reduction of K⁺DPotassium is already in the elemental state Like 0 Discuss 0Share
LiquidsAnomalous Behaviour of Water887Choose 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
KMU MDCAT 2024 Chemistry#Chemical Equilibrium#Le Chatelier's Principle888Choose the best answerIn the production of SO₃ from SO₂ and Oxygen, the yield of SO₃ is increased by (KMU MDCAT 2024)AAdding a catalystBAdding more SO₂CIncreasing temperatureDRemoving oxygen Like 0 Discuss 0Share
XiMDCAT XI Complete Chemistry Grand Test#Chemical Bonding#Sigma and Pi Bonds889Choose the best answerWhich statement about σ and π bonds is incorrect?AA σ bond can be formed by s-s, s-p, p-p or hybrid orbital overlapBA π bond is generally weaker than a σ bondCThe electron density of a π bond lies along the internuclear axisDA triple bond contains one σ and two π bonds Like 0 Discuss 0Share
Chemical EquilibriumActive Mass890Choose the best answerAccording to the active-mass concept, reaction rate is directly related to the:AEquilibrium constant onlyBAtomic masses of reactantsCVolume of the container onlyDActive masses of reactants Like 0 Discuss 0Share