SINDH MDCAT 2018 Chemistry#Electrochemistry#Electrode Potential11Choose the best answerIn electrochemical series, elements are arranged in order of their standard electrode potentials, the correct decreasing reactivity order for metals is: (Sindh MDCAT 2018)AGold, silver, magnesium, aluminumBMercury, calcium, sodium, magnesiumCSodium, aluminum, lead, copperDPotassium, silver, magnesium, aluminum Like 0 Discuss 0Share
ElectrochemistryRules and Exceptions of Oxidation Number12Choose the best answerWhat is the oxidation state of oxygen in KO₂?A−1/2B−2C−1D−3 Like 0 Discuss 0Share
SZABMU MDCAT 2025 Chemistry#Electrochemistry#Oxidation Number13Choose the best answerOxidation state of Tungsten in Na₂WO₄·H₂O is: (SZABMU MDCAT 2025)A+5B+6C+8DZero Like 0 Discuss 0Share
ElectrochemistrySpontaneity of Electrochemical Reactions14Choose the best answerWhich reaction is spontaneous under standard conditions?AZn + Cu²⁺ → Zn²⁺ + CuB2NaCl(l) → 2Na + Cl₂CZn²⁺ + Cu → Zn + Cu²⁺D2Fe(OH)₃ → 2Fe + 3O₂ + 3H₂ Like 0 Discuss 0Share
SZABMU MDCAT 2025 Chemistry#Electrochemistry#Oxidation Number15Choose the best answerIn the given reaction CH₃OH → HCOOH, oxidation state of carbon changes from: (SZABMU MDCAT 2025)A-2 to 0B-2 to +2C-3 to +2D0 to +2 Like 0 Discuss 0Share