Atomic StructureHund's Rule291Choose the best answerWhich statement describes Hund's rule rather than Pauli's exclusion principle?AAn orbital can contain a maximum of two electronsBPaired electrons in one orbital have opposite spinsCDegenerate orbitals are singly occupied before pairingDNo two electrons have identical sets of four quantum numbers Like 0 Discuss 0Share
Sindh MDCAT 2022 Chemistry#Aldehydes and Ketones#Carbonyl Compounds292Choose the best answerQ.90 Aldehyde reacts with:AKetones are more easily oxidizedBIt is always difficult to oxidize aldehydeCMild oxidizing agent & strong oxidizing agent bothDOnly strong oxidizing agent Like 0 Discuss 0Share
ElectrochemistryOxidation and Reduction293Choose the best answerIn 10Cl⁻ + 16H⁺ + 2MnO₄⁻ → 5Cl₂ + 2Mn²⁺ + 8H₂O, which statement is correct?AMn is oxidized from +7 to +2BCl is reduced from 0 to −1CCl⁻ is reduced from −1 to 0DMn is reduced from +7 to +2 Like 0 Discuss 0Share
Chemical BondingIntramolecular Hydrogen Bonding294Choose the best answerWhich compound shows intramolecular hydrogen bonding?AHFBH₂OCp-NitrophenolDo-Nitrophenol Like 0 Discuss 0Share
GasesAverage Kinetic Energy of Gases295Choose the best answerIf an ideal gas expands at constant temperature, its average molecular kinetic energy:AIncreasesBDecreasesCRemains constantDBecomes zero Like 0 Discuss 0Share