ElectrochemistryElectrolysis of Aqueous Solutions71Choose 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
ElectrochemistryStandard Electrode Potential72Choose the best answerThe potential of an electrode measured under standard conditions with its ions at unit activity is called:ANon-standard reduction potentialBStandard electrode potentialCCell resistanceDActivation potential Like 0 Discuss 0Share
ElectrochemistrySalt Bridge73Choose the best answerIf the salt bridge is removed from a working galvanic cell:ACell operation becomes fasterBThe electrode reactions continue indefinitelyCSustained current quickly stopsDThe electrodes exchange their roles Like 0 Discuss 0Share
UHS MDCAT 2024 Chemistry#Electrochemistry#Oxidation Number74Choose the best answerOxidation number of 'Mn' in KMnO₄ is:A0B+1C-7D+7 Like 0 Discuss 0Share
ElectrochemistryOxidizing and Reducing Agents75Choose the best answerIn: H₂S + Cl₂ → 2HCl + S H₂S acts as:AReducing agentBNitrating agentCOxidizing agentDSulphonating agent Like 22 Discuss 1Share5