SINDH MDCAT 2019 CHEMISTRY#Electrochemistry#Oxidation Number16Choose the best answerThe oxidation number of Br in Br₂ is: (Sindh MDCAT 2019)A-1B-2C0D+1 Like 0 Discuss 0Share
SINDH MDCAT 2018 Chemistry#Electrochemistry#Electrode Potential17Choose 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 Number18Choose 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 Number19Choose the best answerOxidation state of Tungsten in Na₂WO₄·H₂O is: (SZABMU MDCAT 2025)A+5B+6C+8DZero Like 0 Discuss 0Share
ElectrochemistrySpontaneity of Electrochemical Reactions20Choose 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