ElectrochemistryOxidation and Reduction81Choose the best answerDuring oxidation, the oxidation number of an element:ADecreasesBIncreasesCRemains constantDMust become zero Like 1 Discuss 0Share
ElectrochemistryStandard Electrode Potential82Choose the best answerWhich statement about standard electrode potential is incorrect?AIt is measured relative to a reference electrode such as SHEBIt is defined under standard conditionsCThe absolute potential of an isolated single electrode can be measured directlyDIt can be obtained by constructing an electrochemical cell Like 0 Discuss 0Share
ElectrochemistryDisproportionation Reaction83Choose the best answerThe reaction 3I₂ + 6NaOH → NaIO₃ + 5NaI + 3H₂O is classified as:AFree-radical reactionBPrecipitation reactionCSubstitution reactionDRedox reaction Like 1 Discuss 0Share
SINDH MDCAT 2018 Chemistry#Downs Cell#Electrochemistry84Choose the best answerThe melting point of NaCl is very high 801°C, it is reduced to 600°C by addition of _________ in Down's process. (Sindh MDCAT 2018)ACalcium chlorideBMagnesium chlorideCAluminum chlorideDPotassium chloride Like 0 Discuss 0Share
ElectrochemistryElectrolysis of Molten Salts85Choose the best answerElectrolysis of molten NaCl produces:ANa at the cathode and Cl₂ at the anodeBH₂ at the cathode and Cl₂ at the anodeCNa and NaOHDH₂, Cl₂ and NaOH Like 0 Discuss 0Share